was thinking the other night about running a second alternator from the drive shaft and only running the hho generator from it. that way as vehicle speed would increase so would alt. output and then hho output could be high and as vehicle speed decrease you could lower demand from alt and when you stop the vehicle hho output would stop. the drag would be the same from the motor but i think it would be a bigger advantage when coasting to a stop, the weight of the car would keep the alt spinning faster than the engine at idle. of course when you're coasting you don't really need hho, and it would be a pain in the a$$ to get it all setup.