When I was a boy, cars were for strong men only. You had to insert a crank into a small round opening below the radiator, and use a good bit of strength to turn motor over, compressing gas-air mixture in cylinders so spark could ignite it. Never saw it work on first try. And my father derived a substantial part of his income from treating wrist fractures when motor backfired.
Boss Kettering, whose inventions made key starting possible made GM what it is today because it made it possible for women to drive, doubling car sales.