[StavrosK]

Why? Why do you need the equipment in an ambulance for a crushed or severed hand? Wouldn't you be better served in literally halving the time it took for you to get to the hospital (driving one way vs waiting for the ambulance to come pick you up) so you can be treated there?

[athenot]

Ambulances don't come from the hospital. They are stationed a bit all over and listen for emergencies. They also listen on the police scanners and can get to an emergency before actually being requested.

The gas station right next to my house has EMT vehicles almost every night hanging out and waiting to interveene in the area.