If you're an American car shopper with a green eye, you know how hard it is to find an eco-vehicle you will want to drive. Hybrid choices aren't exactly plentiful, pollution-free electric cars are still just on the horizon, and hydrogen cars are perpetually just 10 years away. The dirty little secret of clean cars is that they already exist, just not on this continent.

The Sexy Green Car Show, ending today in rural Cornwall, England has been displaying for the past week a selection of cars with style and a conscience. The autos range from familiar names like the Honda Civic to a supercharged exotic from Lotus.

While most auto shows focus on the next best thing, the SGCS features the best of now. And the biggest surprise is that the 60+ mpg wonders aren't hybrids or glorified go-carts. Instead, many of these green machines rely on creative use of new wave diesel engines and carbon fiber skins that are available today.

Demonstrating that utility doesn't have to mean dirty is the Ford Kuga, an off-road capable crossover boasting 44 mile per gallon efficiency by employing a diesel engine. It looks good and will haul your stuff. It's a car mother nature would approve of. But like so many of the cars atSGCS, it's not available in the U.S.

European automakers Citroën and Peugot brought several guests to the party. Peugot's 64 mpg 207 balances bio-diesel capability and a sense of dress. VW's BlueMotion Golf is so petrol frugal, the company says it can make the 740 mile trip from London to the south coast of France on a single tank of diesel - with the A/C on. Again, only available in Europe.

It's a mystery to me why America's climate-minded car buyers have such a dearth of green cars to choose from. Maybe if the U.S. adopted UK-style road taxes that make drivers pay to pollute or if gas prices stay high enough, we'll demand it. One fact is clear, though. We shouldn't have to wait for the Chevy Volt or the hydrogen revolution to drive smarter cars.