GM's Chevrolet Impala - a favorite of dreary rental lots - is getting a do-or-die makeover.
By Doron Levin
FORTUNE -- That Chevrolet Impala you may have rented on your last out-of-town trip has little resemblance to the one arriving at dealer showrooms in the next few weeks. General Motors Co. has completed the overhaul of Chevrolet, its biggest-selling brand, with a new full-size sedan it hopes -- check that, prays MORE