German automakers brightened the Tokyo auto show with cars like these. BMW's Z07, left, is a modern interpretation of the classic 507 sports car of the 1950s. Company sources say the 400ps, V-8-powered Z07 will be produced. Audi's Open End is a sporty version of the aluminum-bodied AL2 that debuted at Frankfurt. The plastic roll-up roof and retractable side windows give the car a cabriolet feel. Will the Open End be produced? Project Manager Stefan Sielaff says it's 'an open-ended question.'