Only  of water is required to reach the bottom of most passenger cars, which can cause loss of control and possible stalling. Most passenger cars will float in just  of water, and  of water will sweep most vehicles (including SUVs and pick-ups) away.
Only a small amount of water is needed to reach the bottom of most passenger cars, which can lead to loss of control and possible stalling. Most passenger cars will float in just a tiny bit of water, and a little more than that will sweep most vehicles (including SUVs and pick-ups) away.