2012 Chevrolet Sonic and Cruze At SEMA General Motors offers 20 different models of new 2012 Chevrolet Sonic at the 2011 SEMA (Specialty Equipment Market Association) Show, General Motors is the last and largest of the small car brand range. Of the 20 Sonics Sonic the Z-Spec I and Spec II-Z. The two, who will [...]