There was a time when this sort of innovative spirit could be found in the US

There are lots of uses for a flamethrower on a car… lighting up carjackers being the most obvious. But flamethrowers mounted to fire directly forward seem to actually be somewhat unwise; if fired while at speed, like as not you’ll end up dousing your own car in flaming napalm. And an argument can be made that that wouldn’t be such a great idea.