When BMW unveils a new 5-Series,the automotive world sits up and takes notice. The 6th generation has now arrived,and it comes with a particularly bold design: the longest wheelbase in its segment,a protruded hood,short overhangs and a coupé-style roofline.A range of seven engines will be available. Those waiting for the environmentally friendly hybrid version,however,will have to wait until the spring of 2011.