BMW takes great pride in its “Ultimate Driving ... A concept version of what would become the Z4 Coupe (E86) was revealed in 2005 at the Frankfurt Motor Show; the production car made its debut ...

Three exceptions to that rule are Porsche’s silky Cayman S, BMW’s sinewy Z4 M Coupe and Nissan’s gutsy 350Z. All are selfish two-seaters clothed in attention-grabbing sheet metal ...