>> Trapped by the high water, he was unable to escape and drowned in his vehicle.
When's the last time you've seen a crank for rolling a window down. I prefer them - much cheaper to maintain, and they don't break down for years and years. Add to that - electric door locks - with impossible to grip knobs for manually unlocking from the inside - yeah, make 'em coat hanger proof - impossible to grip when slippery.
http://www.dailywire.com/news/20380/houston-police-officer-drowns-harvey-flood-waters-emily-zanotti
Driving thru 3-4' of water is no problem in a decent size car, as long as ya keep moving. Only problem is - what happens when ya hit a 2-3' dip in the road. Running water not the problem in Houston - depth of the water is. I used to help folks out from a local underpass down there with my 65' Plymouth Fury whenever the flooding happened. Was about a mile from the house down there. Always grateful - never charged a dime, or accepted any offers. Used to piss the bejeebers outta the local tow-truck rip-off artists.
You can see the underpass on google-earth - Aldine Mail Route and Eastex Fwy (Hwy 59) ... if so inclined. Doesn't look like much of a problem - but the water'd get about 4' deep there.

Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good ...