This year’s North American International Auto Show—also known as the Dtroit Auto Show-took a U turn away from hybrids and compact cars–and unveiled a slew of big cars, huge trucks and flashy sport car with blistering performance. Everyone from Ford and Buick——that’s Buick’s stunning concept car, the Avenir, just above– to Acura and Lexus unveiled products that represented a huge departure from the sorts of cars seen at the last few Detroit Auto Shows.

Just about the only brands introducing products that …