It's a variant of the Chinese Stoplight, known by some as the Chinese Firedrill. The difference however is the car does not stop. It takes a whole new level of badassery to accomplish such a task and it should not be attempted by anyone but the most experienced daredevils.
One good strategy for a 3 person Chinese Greenlight is shown below.
Driver: CHINESE GREENLIGHT GO! *climbs out window onto hood*
Passenger 1: You take the wheel! Meet you on the otherside! *climbs out window onto roof*
Passenger 2: *gives wheel to passenger 1, climbs out window into nearby window*
Driver: *Climbs into passenger 1's original seat.*
All: YEA!! We all just gained a badass level!