The U.S. federal government is investigating at least 20 dealerships that may have violated the rules of last year’s cash-for-clunkers program. Hyundai and Renault reveal a couple new cars at the 2010 Moscow International Motor Show. BYD is in trouble with the Chinese government for illegally building factories on farmland. All that and more, plus guest-host Jim Hall sounds off on some of the perks and pitfalls of electric vehicles.