nice work Steve.
This mod sounds like what I was planning to do w/ the bit-charg multi-controller+chassis and a 2.4v mod. My thinking was that the multicontroller's turbo option (from my understanding it operates at full voltage or roughly half voltage, selectably) would make a 2.4v mod drive like a regular 1.2v bit, then when I hit turbo it would run at top speed. So I could use a 2.6 motor and have good cornering, then it'd run like a 5.2 motor (if there was such a thing) in the straightaways.
Your idea gets more points for creativity tho.