[tonyw]

Question for you guys...what if you let him finish the drive to the airport and THEN call the car service?

I figure if you make him pull over at a gas station or somewhere else, it's going to take just as long and if he's messed up, having him change his course may cause more trouble.

You do have to inform someone about him but I'd try to do it in a way where he's got zero idea something's going to happen to him so the cops can nail his ass to the wall.