BMW X4 prototype spied in the metal

A� BMW X4� prototype has been spied testing for the first time, providing an early look at the production model. Caught by CarAdvice�??s spy photographers wearing only light camouflage, the BMW X4 prototype masks very little, with most details clearly visible. Compared with the BMW X4 concept car unveiled at this year�??s Shanghai auto show in April, the prototype is noticeably tamer. At