Right, lots of uses in the old days and they put 'em on trucks as late as 1974. We have a '74 Bronco with a factory hand throttle, and it's great. That's really funny about the 8 year old. When my son was 10 he could barely reach the gas pedal on my CJ, and it had a bit of a sticky throttle at tip in. So we'd be in a big mud puddle and he'd push it...nothing...push harder...nothing...push harder yet...POW! 325 hp making four giant rooster tails with a 10 year old behind the wheel looks pretty cool.
If I had all the money I spent on cars, I'd spend it all on cars.