A three-cylinder Ford Fiesta and four-cylinder Chevrolet Impala question how many cylinders are enough. No question that six cylinders are enough for our great-sounding Maserati Ghibli - after all, they come from Ferrari. We then talk about the new Jeep Renegade and answer viewer comments about the Chevrolet Volt, Tesla Model S, Subaru Outback, and (once again) the Dodge Durango.