Water doesn't shut off engine.

Tells me your some what arrogant and like to be a smart ass.

Also tells me there will be drag slowing down vehicles in water, not if it'll have enough force when hitting it at high speeds to cause damage.

Remember buddy, not every is as 'smart' as you

 

I'm not trying to say that posting this was wrong, or that you did not search. I was trying to help you understand that it has been mentioned before and if it were me I'd be curious what others had to say on the topic.

 

I knew that, but those posts were irrelevant because they asked for other junk like buoyancy and crap. But thanks.

 

For now you could do ( I don't know torque code but here is how it goes through my head)

If Playervehicle Height Less than (Waterplane=Y)-(1) Then EngineStop