Vehicle Basics USA

Main Street-Legal vehicles - Driver's License, Insurance Required
Automatic transmission switches gears for you.
Manual Transmission, you have to hold the gear lever and change gears yourself. More fun!

Commercial vehicles - Commercial License, Insurance Required

18-Wheel Truck (Cargo, Shipping Container)
6-10 Wheel Bus (City, Schools, Greyhound, Amtrak)

Off-Road vehicles - Insurance may or may not be required