A vehicle includes a main body configured to allow a user to ride on the main body, two driving wheels rotatably coupled to the main body, and a controlling wheel part rotatably coupled to the main body to control a direction of the vehicle in which the main body travels at a specific drive velocity by making contact with a ground surface to rotate about a vertical direction in a three-wheel mode. The main body includes a seat part formed to receive the user in a seated position, a steering part configured to obtain an inclination degree to perform steering based on the inclination degree in which the user seated on the seat part is inclined, in the three-wheel mode, and a post configured to connect the steering part with the seat part.

A vehicle includes a main body configured to allow a user to ride on the main body, two driving wheels rotatably coupled to the main body, and a controlling wheel part rotatably coupled to the main body to control a direction of the vehicle in which the main body travels at a specific drive velocity by making contact with a ground surface to rotate about a vertical direction in a three-wheel mode. The main body includes a seat part formed to receive the user in a seated position, a steering part configured to obtain an inclination degree to perform steering based on the inclination degree in which the user seated on the seat part is inclined, in the three-wheel mode, and a post configured to connect the steering part with the seat part.

A rod piece connection device, comprising: a first connection piece and a second connection piece. The first connection piece includes a first rod piece connection end and a first joggle joint end opposite to the first rod piece connection end. Wherein, the first joggle joint end includes a protrusion head tongue portion and a neck portion. The second connection piece includes a second rod piece connection end and a second joggle joint end opposite to the second rod piece connection end. The second joggle joint end is located corresponding to the first joggle joint end for them to form into a joggle joint. The second joggle joint end includes a protrusion bottom groove portion and a pillow portion. Wherein the protrusion head tongue portion is disposed corresponding into the protrusion bottom groove portion, and the neck portion is located corresponding to the pillow portion.

A rod piece connection device, comprising: a first connection piece and a second connection piece. The first connection piece includes a first rod piece connection end and a first joggle joint end opposite to the first rod piece connection end. Wherein, the first joggle joint end includes a protrusion head tongue portion and a neck portion. The second connection piece includes a second rod piece connection end and a second joggle joint end opposite to the second rod piece connection end. The second joggle joint end is located corresponding to the first joggle joint end for them to form into a joggle joint. The second joggle joint end includes a protrusion bottom groove portion and a pillow portion. Wherein the protrusion head tongue portion is disposed corresponding into the protrusion bottom groove portion, and the neck portion is located corresponding to the pillow portion.

A vehicle-to-vehicle connector includes a first component and a second component. The first component is configured to be connected with a first vehicle body, and a second component is configured to connect a second vehicle body with the first vehicle body. The second vehicle body includes a front wheel assembly, a stem and a handle bar, and the front wheel assembly, the stem and the handle bar lean toward a direction opposite a moving-forward direction of the first vehicle body.

A flexible towing device for single-track vehicles, comprising a towing element adapted for mounting on a first of single-track vehicles and comprising a flexible towing element and a lock attached to one of the ends of the flexible towing element, a locking mechanism assembly adapted for mounting on a second of single-track vehicles and comprising a first portion of the body comprising a half-seat, a second portion of the body comprising a half-seat, which half-seats of the first and the second portion, respectively, form a seat for detachable coupling of the lock of the towing element assembly, wherein the lock of the towing element assembly is releasable from the seat of the locking element mechanism assembly following applying a release force to the lock. A towing element assembly and a locking mechanism assembly for use in the flexible towing device for single-track vehicles.

A vehicle includes a main body configured to allow a user to ride on the main body, two driving wheels rotatably coupled to the main body, and a controlling wheel part rotatably coupled to the main body to control a direction of the vehicle in which the main body travels at a specific drive velocity by making contact with a ground surface to rotate about a vertical direction in a three-wheel mode. The main body includes a seat part formed to receive the user in a seated position, a steering part configured to obtain an inclination degree to perform steering based on the inclination degree in which the user seated on the seat part is inclined, in the three-wheel mode, and a post configured to connect the steering part with the seat part.

A vehicle includes a main body configured to allow a user to ride on the main body, two driving wheels rotatably coupled to the main body, and a controlling wheel part rotatably coupled to the main body to control a direction of the vehicle in which the main body travels at a specific drive velocity by making contact with a ground surface to rotate about a vertical direction in a three-wheel mode. The main body includes a seat part formed to receive the user in a seated position, a steering part configured to obtain an inclination degree to perform steering based on the inclination degree in which the user seated on the seat part is inclined, in the three-wheel mode, and a post configured to connect the steering part with the seat part.

A flexible towing device for single-track vehicles, comprising a towing element adapted for mounting on a first of single-track vehicles and comprising a flexible towing element and a lock attached to one of the ends of the flexible towing element, a locking mechanism assembly adapted for mounting on a second of single-track vehicles and comprising a first portion of the body comprising a half-seat, a second portion of the body comprising a half-seat, which half-seats of the first and the second portion, respectively, form a seat for detachable coupling of the lock of the towing element assembly, wherein the lock of the towing element assembly is releasable from the seat of the locking element mechanism assembly following applying a release force to the lock. A towing element assembly and a locking mechanism assembly for use in the flexible towing device for single-track vehicles.

A golf trike that has a slot between two storage compartments between its rear wheels. The slot fits and holds the front tire of a towed golf trike. A bag rack on the front golf trike articulates forward out of the way of the slot on the front trike to allow the front tire of the rear trike to fit into the slot. When the golf trike is not towing another trike the bag rack articulates rearward to hold a golf bag for routine play.