A tonneau cover having integrated power sources and other accessories includes an outer portion and an inner structural portion. The power source may be one or more solar panels with associated power storage units for storing electrical energy. Accessories may include at least one rear warning sensor attached to a rear facing portion of the tonneau cover and configured to detect a distance to a following vehicle. A visual warning indicator may also be attached to the rear facing portion of the tonneau cover to indicate to the following vehicle when it is following too closely. Side lights and emergency lights integrated into the cover may also be included, as may additional accessories or ports for same.

A vehicle top can comprise a targa top and a retractable top. The retractable top can comprise fabric and a frame. The targa top and the retractable top can be configured to be coupled to a vehicle such that the targa top overlies at least one front seat of the vehicle and the retractable top is pivotable between deployed and retracted positions. The fabric of the retractable top can be disposed closer to the targa top and overlie more of the vehicle when the retractable top is in the deployed position than when the retractable top is in the retracted position.