The Chevy Volt concept, shown at the Detroit show, is a car designed
to be a plug-in hybrid from the start. The Volt is based on a roughly
Cobalt-size platform and is said to weigh 3200 pounds, while a 160-hp
electric motor drives the front wheels. That motor is powered by a 400-
pound, 16-killowatt-hour lithium-ion battery pack (same kind of
batteries used in laptop computers). GM says this massive battery,
which stores as much energy as 12 Prius hybrids, can propel the Volt
for up to 40 miles.
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