Re the Mazda "back in the day" (late 70's) cause of $ 1 buck a gallon gas (lol) there was a push on for "economy jets" and i vaguely remember a couple of small production jet boats with Wankles (mazdas) and Datsun 2000 dual carb motors Interesting concept !!!
I once had the opportunity to drive a Dealer customers early Mazda coupe RX2 or 3 (circa 1974) home about 60 miles. The dealers daughter followed me in a new Olds 442 . I repeatedly blew her doors off on the freeway on the trip as the little Mazda would pull easily 8K before the tattle tale beeper would go off ....Tom Mazdas go hmmmmmm