[Rokeby]

FWIW, Jaguar is working on a turbine-electric hybrid to be released in 2013,
the C-X75 concept:



That's the breathtaking Jag coupe that would use a pair of tiny
microturbines to generate electricity to keep the electric wheel-motors
running the grid-charged lithium-ion batteries were depleted.

The one rated at 778 horsepower and, Jaguar engineers say, capable if built
of delivering up to 68 miles of all-electric range before the turbines would
kick in.

Turns out there are still two problems to be overcome before concept could
become reality - how to efficiently and effectively supply the tiny turbine
range extenders with all the air they need without turning the entire car into
a giant scoop, and how to manage the extremely high-temperature exhaust
from the turbines.
Green Car Advisor

Jaguar Land Rover is working on the car with British gas turbine
manufacturer Bladon Jets and electric motor manufacturer SR Drives. The
Technology Strategy Board, which funds business development in the U.K., is
underwriting the first serious attempt at a turbine car since Volvo built the
Hybrid Environmental Concept in 1993. The goal, according to Bladon, is the
“world’s first commercially viable – and environmentally friendly – gas
turbine generator designed specifically for automotive applications.”

Previous attempts at turbine-powered cars, of which the Chrysler Turbine Car
might be the most famous, used the technology to turn the driveshaft. But
the Jag — like the Volvo — would use a miniature gas turbine only to
generate juice for the electric motor. Bladon says its axial flow turbines are
small, lightweight and run on anything from natural gas to biofuel. That, it
says, makes them a great alternative to the conventional engines used in
range-extended hybrids like the Chevrolet Volt.
Wired.com