The hosts of Car Talk Tom and Ray Magliozzi are hunting for a new car to replace Tom's 1952 MG roadster. They head to at Detroit's North American International Auto Show and Boston's AltWheels Festival to seek out the future of the automobile talk with engineers working on environmentally friendly technologies and question a Detroit auto executive. Also included is a look at hydrogen-fuel cells, ethanol, and lithium-ion batteries
Seen in more than 100 countries, NOVA is the most watched science based television series in the world and the most watched documentary series on PBS. It is also one of television's most acclaimed series, having won many major television awards, most of them many times over.