[neilzero]

I just read the 108 tips, and got an idea from the pulse and coast tip: Most vehicles power two wheels, so the remaining pair could each have a tiny electric motor which switches on under some conditions, plus a temporary manual off and an on button for the driver, if he wants to bother. You are starting up cold, so the electric motors help until things get warmed up. You let up on the accelerator, the electric motors run, possibly the main motor shuts off = slightly assisted coast. You step on the break = all motors off, except at some speeds the electric motors shift to regenerative breaking and/or the transmission down shifts. You reach the crest of a hill = possibly a web-cam type camera can determine that: Main motor off, electric motors on so you can maintain speed on a slight down hill slope. You are making a turn: one motor on full power to reduce tire scrubbing. The tiny motors' battery is low: The tiny motors run regenerative braking when ever the speed is appropriate. Typically we charge this battery at home, so we have a plug in electric partial most of the time. A diode can supply charging current to the main battery if it is low and while cranking. The driver can push the on button to get slightly increased acceleration. If you have to push your vehicle, the iiny electric motors make it slightly easier to push. Likely there are lots of other possibilities. Neil