Volkswagen on a drive to extol diesel's new dynamics.

Now German automaker Volkswagen is trying to put a green spin on the fossil fuel, pitching it as a viable stopgap measure for a world trying to shift from gasoline use to some cleaner, next-generation energy sources for its cars and trucks. Volkswagen of America's Dieselution Tour ? featuring several diesel VW?s on display alongside a long semi rig ? is parked today at the Rochester Institute of Technology campus.