|Fording a flooded road - Mercedes' surprisingly capable GLK|
You can read about how to prevent, prepare for, and deal with several such scenarios in my piece for the AutoTrader here.
Flooded roads - such as the one simulated for the launch of Mercedes' GLK in Germany, as seen above - are just one warm-weather threat. Note the nice bow wave and the corresponding area of reduced depth immediately behind it that this slow-moving GLK is creating. This is what you want, not the YouTube-hit generating cascade of water a high-speed traverse will generate. Those look cool, but have a good likelihood of resulting in a similarly internet-enticing mid-crossing engine failure.