Actually, seen at work.
A few days ago at the start of my shift I noticed a fellow sledgehammer mechanic in the parking lot in front of another co-worker's Camaro with the hood up, so I wander over to see what's up. He had just re-attached a coolant hose that had popped off and was filling the rad with water. The owner then shows up with the key and starts it. I comment that I see the problem, it's only running on 6 cylinders (it's a 3800), obviously it needs a proper engine.
Anyhow, he wasn't amused, but I digress.
So we put in about 12 litres of water and it still needs more, hmmm. I suggest pulling out the dipstick and sure enough, we find the coolant. Obviously it has a head gasket or similar gone.
So Kevin (who is actually a licensed auto-mechanic) tells the guy he'd best just shut it off and call a tow-truck. He says: "Have to get it home, wife was too cheap to get CAA plus and just have to get it home". We ask where he lives and it's about 30km away, we both reply that he won't make it and his engine will be toast, but it's repairable now if he doesn't drive it.
Off he goes.
We take bets on how far he'll make it.
Next morning we see him in the cafeteria when he gets to work. I won the bet, he didn't make it across town, let alone anywhere near his home.
I don't know if he just didn't believe us, or if he's that much of a moron. Anyhow, he's shopping for a new engine.