Automotive
It turned out to have too much power for its brakes and was withdrawn, never to be seen again
http://www.diecastxchange.com/forum1/topic/185130-pro-sports-racing-cars-wanted-in-118th-updated-52116/
Joe Leonard driving the McKee Mk. 14, a four-wheel drive special with an automatic transmission and a twin-turbo 7.5-liter Oldsmobile
It turned out to have too much power for its brakes and was withdrawn, never to be seen again
http://www.diecastxchange.com/forum1/topic/185130-pro-sports-racing-cars-wanted-in-118th-updated-52116/
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The Commotion by Motion 455, a ’69 Motion Hurst/Olds, the only example of Motion speed shop and factory-built performance muscle cars existing today.
Joe Leonard driving the McKee Mk. 14, a four-wheel drive special with an automatic transmission and a twin-turbo 7.5-liter Oldsmobile 
when racing in 1903, your competition was going to look nothing alike... compare that to nascar today and it's one body for all manufacturers and makes
