About a thousand years ago my Dad had a 1970 SAAB 96, and one thing about it that always drove him crazy was the freewheeling clutch - it would keep popping between settings and that made it hard to drive.
But most significantly, that thing would've been the owl's howl for P&G - tap the gas to go, let up to coast. Is anyone making a slipper clutch that could be bolted into a modern app? Like an '87 Toyota truck?