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Askmen.com lists 6 concept cars for 2007.  

Honda Small Hybrid Sports
It’s a four-cylinder gas/electric car, wearing 20-inch wheels and stylish lines from Honda’s European studios. Should Honda decide to re-introduce a hybrid-only mode, this could echo the next Insight. Reports say that company officials suggesting the next production model in 2009 will probably be a four-door to compete with Toyota Prius. But the design elements from the Small Hybrid Sports, on a slightly longer wheelbase, would still result in a far better way to save the planet.

Chevrolet Volt
The Chevy Volt concept could possibly deliver the promises the EV-1 electric car broke ten years ago. Appearing a bit like a four-door 2009 Camaro, the Volt uses a large lithium-ion battery for primary motivation (chargeable in a standard 110-volt outlet). A 1.0-liter, turbocharged, three-cylinder engine is also available for recharging or to keep you moving when the battery drains.

Citroen C-Metisse
This concept can speed with 0-60 mph times of just more than six seconds and a top speed of 155 mph. Even more impressive is that those figures are generated by a 208-horsepower V6 diesel/electric hybrid power train. The powerfully elegant exterior has four vertically opening doors. Inside is a generous space and technology.

Jaguar C-XF
The Jaguar C-XF seems like a big leap in the right direction. It resembles any Jag built in the Beatles’ era. Do not expect the C-XF in showrooms, but it is highly likely that the 2008 XF, the S-Type’s replacement, will echo this car.

Lexus LF-AFew years ago, Lexus trailed us with what now appears to have been a concept of a concept car. And the LF-A is what could be the flagship of the recently-formed F-Division and the first 200-mph Lexus. Exuding a revamped skin, this LF-A is a mid-engined car with Aston-Martin when viewed from the side. The tasteful air ducts just behind the doors are the only hints of the 500-horsepower V10’s activities. Production, though, is yet to be confirmed.

Holden Efijy

Fanatics know Holden as GM’s Australian cousin, where the promising 2008 Pontiac G8 and the sadly departed GTO revival. Resembling a custom car from Boyd Coddington’s shop, the Efijy is actually a Holden factory effort boldly recalling the early ‘50s FJ.

The FJ is to Australia what the late '50s Tri-Five Chevys are to us in the states.