 Sound from the debate last night. Also of note, finding your car submerged or partially underwater because of a flood can be incredibly stressful. MarketWatch put together tips to take when you have a flooded car. Number one, perhaps most importantly, prevent additional damage. Don't try to start the car until mechanic has looked at it. If water has entered the cylinders, attempting to turn on the engine can cause significant damage. Number two, look for a watermark on the car's exterior and interior to gauge the extent of the flood impact.