A semi truck would easily crush an alligator.
There is no prefix in truck.
A wagon has 4 wheels.
A tram can be a monorail without wheels.
4 Wheels
2 wheels
2 wheels
Concorde has 10 landing wheels - how many internal "wheels" is any ones guess
A velocipede has two wheels
it has 2 wheels
Becaks have Three wheels
2 wheels