All-time high gas prices have made Americans intensify their searches for top-shelf fuel economy, as evidenced by 15-year-old Geo Metros selling on eBay for $7,200. Apparently even capitalistic insanity isn't enough to convince Volkswagen to bring a diesel engine Stateside in the hotly anticipated Tiguan, as the ultra-efficient 2.0L oil-burner likely won't be available for MY 2009.

Click above for a high-res gallery of the Audi A3 TDI Clubsport Quattro.

Audi has released the first official images of its newest concept before the wraps are taken off at the Lake Wörther Tour in Austria later this month. Think of the Audi A3 TDI Clubsport Quattro concept as a smaller, racier, more attainable version of the Audi R8 V12 TDI concept shown in Detroit, with power provided by the highest specific output diesel in the world.