As G.M. scrambles to come up with gas-sipping small cars, it's good to remember that generous motors has a long and illustrious history of, well, not coming up with reliable alternatives to gas guzzlers. Case in point: the Opel Kadett. Granted, G.M. didn't actually make this car, but they did sell it. Occasionally. And at least it was a lot cooler than a Chevette. And these super mod, Euro-esque ads are soooo groovy.