The present invention is applied to pedal vehicles, or mixture of electric and pedal vehicles, or combination of electric and pedal vehicles, especially to a bicycle capable of being pedaled bidirectionally and driven to move in unidirectional. The first battery cell has a first housing and first and second electrical terminals. The apparatus includes an imaging system with a camera for acquiring digital images of the target through the optical material, a system for exposing the material to environmental conditions, and a system for processing intensities of the target in the acquired digital images. The effective clock rate is stepped back up at the end of the scan shift phase to the first rate which is used in the following functional phase. The insulation system includes an integrated support element that can be used to increase the rate of evaporation via various methods, provide for the concealed distribution of cables and wiring andor improve the aesthetic appearance of the insulating product.