I'm partial to engine driven fans, but I also like flip phones! The KISS principle applies to both situations. If electric fans were "all that and a bag of chips", why didn't my father's B-17 have electric motors driving the props instead of 1200 HP Wright Cyclone radial engines? A thermostatic fan clutch combines the best of both worlds - - - -lots of horsepower to run the fan when the engine needs it, and quiet operation on the highway when the fan isn't necessary.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!