Some buses used in "Speed":   

Before:   

After: fronts of several buses cut off and sent to "Planet Hollywood" locations for props. Presumably scrapped after that. Buses were driven to site before being cut up. Wag remarking on pic says "Scott, you left it in gear, that's dangerous!" (short knob-topped lever tipped forward). My response: "It's okay, he left the parking brake on" (Johnson-bar lever also tipped forward, but tips even further forward when brake is off).      

For scenes where stars are "driving" the bus, filmed with actual driver on the roof. Here, the seat is flipped forward (probably to clear overhead wires, etc.)   

General condition of bus after the movie.      

Rigging to get the action         

A different bus: for under-bus stunts, bus was elevated and driven by nonstandard power pack. Not sure why.                        

This bus was blown up early in the movie:   

This bus was used for recording engine sounds. It is a Flxible, not a GMC!