This week, in its latest episode, Nova opts to deal with its serious subject in a somewhat more humorous manner.  In a cross-promotional effort, Nova has Tom and Ray Magliozzi, the hosts of NPR's Car Talk off searching for the car of the future (which also happens to be the episode's title).  They are, the show would have us believe off searching for a new car for Tom as his ancient Roadster is in need of serious repair.

During the episode, Tom and Ray search high and low, hither and yon, and just about everywhere in between in their search for what motor vehicles will be like in the future.  Along the way John Lithgow narrates the brothers' search, informing the viewer about the larger picture of what is taking place.  Said "larger picture" mainly deals with the environment and how our world's use of gasoline in the engines of cars is destroying it.

Not surprisingly, the episode premieres on April 22, 2008 – Earth Day.

Tom and Ray look at numerous different forms the "car of the future" might take, from fully electric, to ethanol hybrids, plug-in hybrids, and really, really small cars that operate on gas engines but are so tiny they get great mileage.  The brothers also check at the fare being offered by the huge car makers at the North American International Auto Show in Detroit. 

The episode is huge in scope, as it attempts to point out the advantages and drawbacks of a multitude of different possible replacements for our current crop of cars as well as make Tom and Ray interesting, funny characters.  It is far more successful at the former than the latter, though even there it is, at times, a little weak.  A portion of the problem may be not just the fact that there are too many possibilities to be fully considered and there are some rather glaring problems (e.g., what will happen to food costs with if corn kernels are used to produce ethanol).