"Ed Huntress" wrote:

Since you keep drawing the batteries down low when you drive on electric
only, there's a concern about battery life, too. I've heard that's the
reason that Toyota was bad-mouthing plug-ins early on, and wouldn't build
one. Also, you'd need about $30,000 worth of their current type of batteries
(NiMH, apparently soon to change to Li-ion) to get any worthwhile range out
of it. One hopes that will improve over time.

LiPo batteries sure look interesting.

LiPo 130-200 Wh/kg
Nicad 40-60 Wh/kg
NiMH 30-80 Wh/kg

Wes