[mikeyur]

I've had to break into a ridiculous amount of vehicles for friends that have locked their keys in. Pretty much every car window will give you at least an inch or two of room with enough wiggling/pushing. And then at that point you just need to move it a bit to get your wrist in and a stick to flick up the lock.

Though you're screwed if there's no 'lip' on the lock to get something under to flip it up.