 Your vacuum that you're driving. If you've... Everybody, I think, has used a wet dry vac at home at least once. And what happens when you touch that five horsepower, three inch hose vacuum to water just immediately? Boom! And it sucks up five gallons of water in seconds. 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...