Hydrolocking is where an engine is unable to be powered or kind of breaks when submerged in water. At least that is what I think it is, all I know is that is does damage to the engine of a vehicle when the engine is submerged in water.
My point is- is that when a vehicle is underwater or the engine of the vehicle is underwater, the vehicle should no longer be able to work or put power down after the engine goes underwater.
This applies to all vehicles that are gas powered except electric vehicles, electric vehicles should still be able to put power down even after underwater, because it’s how car logic is in most games with electric cars.
There should also be a little banner or something that pops up somewhere on the screen saying that the engine has hydrolocked as well, just a little addition.