View this article at: http://www.macnn.com/articles/08/09/02/vroom.case.for.iphone.3g/ Tuesday, Sep 02, 2008 4:30pm Case-Mate unveils Vroom tir... Case-Mate has unveiled its latest iPhone 3G case, the Vroom. The back of the case is molded into the form of a tire tread, and is constructed from impact-resistant black rubber. The case form-fits over the phone, and leaves all controls accessible. For people wanting added protection on the touchscreen, Case-Mate notes that the Vroom is also compatible with Clear Armor. The Vroom case is available from the company for $15.