Imagine being able to pedal until your knee starts burning, then switching over to all-electric mode and coasting your way ...

The 60s and 70s were the golden age of hip movie stars, and the motorcycles they rode, just made them that much cooler.

The maximum speed in the air is 62 miles per hour. This propeller-driven motorcycle takes to the skies to beat frustrating traffic — here's when you can buy one first appeared on The Cool Down.