[MP2]

OnVehicleDeath is called when a vehicle enters water (but also when they explode). That's all I can think of. Not sure how you could detect whether it's water or explosion.

P.S. Note the following:

> Vehicle enters water
> OnVehicleDeath called
> Vehicle is 'saved' from water (teleported/driven out (thanks to low waves))
> Vehicle re-enters water
> OnVehicleDeath won't be called a second time.