Favorite American Concept Car

Which of these American concepts is your favorite? I was just wondering which one you thought really embodied style.

• What is your favourite car and why?
• Car proportions
• CLK-GTR vs. Porsche GT1 vs. TVR Speed 12 vs. Nissa
• M3 GTR vs. CLK DTM
• Whats the fastest speed you driven at, and in what
• Whats the fastest speed you driven at, and in what