4. Hildebrand & Wolfmuller – $3.5 million
Every single one of you out there knows that history is expensive and that a gem like this truly justifies its insane price tag. This is, in fact, the first production bike and it was released in 1894. This bike is the child of Heinrich and Wilhelm Hildebrand, two steam-engine engineers who teamed up with Alois Wolfmüller in order to produce their internal combustion Motorrad in Munich in 1894.
Fun fact about this bike is that it has neither clutch nor pedal, so if you manage to get your hands on one of these (and decide to drive this hefty investment around) be prepared to run and jump with this ancient mahine.