text:  Your car is a several hundred horsepower shop vac with a bigger air intake. It can suck up way more water way faster, and it only takes about a quarter of a cup to destroy an engine because they're so tight inside. You get it in there, it hydrolocks it at the minimum. You might bend some valves or bend a connecting rod or break a piston. Internal damage that's going to cause you to replace the engine or take it apart at a minimum. Stay out of the water.