Rumor has it the next HSD Prius ('09 model) will be Lithium...that's 2+ short years from now. Not to mention Toyota's early hybrids (just in Japan, start-stop type systems) had/still have lithium batteries.

Cheers,

Curt.

'04 Seaside Pearl #7. Fumoto oil drain, mudflaps, rear bumper scuff protector & rear warn system, compass mirror, EV mode button, 8" subwoofer in right rear cubby & 6" subs under seats, power lumbar in the front seats, Coastaletech hitch w/ Aspen bike/snowboard rack. iPod2car, 2 amps, Alpine component speakers, and DVD video, solid 47 MPG @ 70000 miles.