Interstellar Motors' "Intergalactic Space Machine"
No, really, that's what this quirky shop from Rochester, NY, calls all its bikes. Unless you get really picky about driving around on a planet, this bike doesn't actually travel through space—it's just space efficient, with the ability to add on a second seat pretty easily. What started out as an old Suzuki GS550 is also lighter and more powerful before, and every component of the suspension has been changed out in the name of performance. So it might actually feel like a rocket ship.
H/T: Return of the Cafe Racers