The Coach is a large public transport bus that is resemblant of an intercity bus such as a Greyhound Bus, also called a Coach. The Coach has a very good accelaration and top speed for it's size, and is the largest non specialty vehicle in the game. As far as momentum and control, it has ramming capabilites that are as good or better than the Flatbed 10-wheeler truck. It seems to have more power than the the Flatbed; it is faster. The engine and sound effects are exaclty the same.
The Coach is found occassionally at the bus stops located around the city. If you steal it, you can pick up passengers for 5 dollars apiece at the bus stops. This is an off the charts mission that is not needed for 100% completion of the game.