The Vehicle Test Site is a hub within the AMC TC that allows you to....test vehicles. Go figure.
The test site contains five vehicles that can be driven around without consequence (unless you crash out and hurt yourself):
- two motorcycles
- a tank
- two jet-skis
- a Cycloid attack ship
- a MS Industries powersuit
The powersuit and tank are located on a squarish plot of pavement that can be accessed on foot, though the motorcycles and Cycloid fighter ship are the better choices to get there. Both of the motorcycles can be "raced" on a track located near the landing site; a dock, housing the two jet-skis, is close by.
Weirdly, the hovercraft found in one of the Hong Kong levels from Episode 2 doesn't appear in the Test Site.