BMW Z4 Spices Up 2010 Detroit Auto Show – NAIAS Video: www.insideline.com More Articles: www.insideline.com Car Prices & Info www.edmunds.com Twitter Feed twitter.com Facebook Page www.facebook.com Hi-Res Videos: www.hulu.com side-line BMW will publicly unveil the new 2011 Z4 sdrive35is roadster in early January at the 2010 Detroit Auto Show. The range-topping Z4 sdrive35is features a new M Sports package that also will be offered on other Z4 variants when the Z4 sdrive35is reaches US dealers in spring 2010.