Saint Johnsbury Buick GMC

Buick is getting greener. In mid 2011, the American automaker plans to introduce the 2012 LaCrosse eAssist. The new green machine is expected to deliver 25 mpg-city/37 mpg-highway. By comparison, the 2011 LaCrosse (with the same 4-cylinder engine) delivered only 19 mpg-city/30 mpg-hwy. Such a jump in mpg can yield an impressive 30 percent gain in fuel economy.
 
Buick's innovative e-Assist is similar in principal to the belt-alternator-starter (BAS) hybrid-system previously used…