I was thinking of having it as a standard bike, with wheels as the primary motive power, but he'd also managed to install a salvaged hovercoil so the bike could make long jumps when needed (or when trying to impress a girl.)

Since he'd be a skilled but self-taught mechanic most of his gear would've been custom built from whatever he could find or salvage, and may not always be reliable. Other equipment I was thinking of having him carry would be a long-range scanner capable of detecting power sources and metal, which he'd use to track down useful salvage in the desert, and a magnetic coil 'railgun' which would use nails and other metallic debris for ammunition.

At some point one of his inventions would've literally blown up in his face, requiring him to have his left eye replaced with a cybernetic implant. Exactly where and when this had been done is something he doesn't like to talk about much, but then again he doesn't like to talk about anything very much, apart from technology.