Honda also enclosed the entire motorcycle in plastic, giving it a seamless appearance. The seat height was lowest yet on a Gold Wing, the passenger back rest and trunk were integrated, and a central mechanism locked the trunk lid and saddlebags. Rear suspension air pressure was adjusted by an on-board compressor. One major innovation was the addition of a "reverse gear", which was actually a creative use of the electric starter motor linked to the transmission. Because of the size and weight, Honda felt that some people would have problems backing it up.