For millions of Americans, regular emissions tests — sometimes called smog tests — are part of vehicle ownership. Thirty-one states and the District of Columbia have at least one county that requires ...

Although there has been increased attention paid to electric vehicles in recent years, that doesn't mean the regulations for gas guzzlers have been relaxed. Both automobiles and motorcycles still need ...

CAROL STREAM, Ill. (CBS) --An Army veteran from Carol Stream, who is battling cancer, relies on his nearly 30-year-old car to get around, but it failed an emissions test, and it's so old he can't get ...