Wolfgang
Kraftwagen König
Agree, the proportions need some work. The rear door above looks too small compared to the front. 
http://mercedes-benz-blog.blogspot.com/2013/09/report-mercedes-benz-plans-sportcoupe.html
http://mercedes-benz-blog.blogspot.com/2013/09/report-mercedes-benz-plans-sportcoupe.html