 That boosts the horsepower, but yet gets you good mileage, and you can go up to around 50 miles without using any gas. But then if you need gas, it'll switch over, and you'll never know it. My personal pick would be the Cayenne. And you can talk to my friend Victor Gassimi, the general manager at Porsches of downtown L.A., and he'll take really good care of you.