Scripps-Booth Bi-Autogo
Part motorcycle and part girlfriend repellant, the Bi-Autogo was a prototype motorcycle/car combo. It had two wooden wheels, a gigantic V8 engine, and small wheels that would pop-out and stabilize the vehicle during high speeds. The bike was designed in 1913-era Detroit by James Scripps Booth. Good luck getting your hands on one today though. They only made one!