I'm no Jake type engineer,I put nails in boards, but it seems that if the gearing between the wheels and the prop made the prop spin faster to provide more thrust than the speed the wheels were experiencing at that moment it would gain speed.I'm sure there's a stop point for that, but at lower speeds I would think it would work.

Tawd


"I said, now, I said ,pay attention boy!"

The cure for anything is salt water - sweat, tears, or the sea
Isak Dinesen
If a man is to be obsessed by something.... I suppose a boat is as good as anything... perhaps a bit better than most.
E. B. White