This promises to be good. - "Car of the Future" NOVA episode on PBS
Tuesday 4/22 with Tom & Ray Magliozzi (Click & Clack the tappet
brothers, from NPR's "Car Talk").
Check out the preview at NOVA homepage:
http://www.pbs.org/wgbh/nova/
Click the play button on the video window on that page to see the
preview.
There's also more extensive information on the website for the program:
http://www.pbs.org/wgbh/nova/car/