Former "McCloud" star and avid environmentalist Dennis Weaver, 76, plans to drive a retrofitted 1995 Buick, powered by hydrogen, from Washington, D.C., to Los Angeles, in order to heighten awareness of non-pollutant modes of transportation, reports Variety columnist Army Archerd. Hydrogen, as opposed to gasoline, does not leave harmful exhaust fumes and is a sensible power source, according to Weaver, whose itinerary includes major cities between D.C. and L.A. He reportedly plans to make the trip by mid-June.