Well, none of their taillights match anything so they must be aftermarket tuner stuff…
Found this on a cars website…quasi-official maybe…
The Delinquent Road Hazards
The Delinquent Road Hazards are a group of four Street Racers that cause trouble on the roads. The four of them cause Mack to falter, sending McQueen out of his trailer. They return in the Cars video game to cause trouble once again. The members include Boost (voiced by Jonas Rivera), the leader; DJ (voiced by E.J. Holowicki), who uses loud speakers; Wingo (voiced by Adrian Ochoa), a Japanese right-hand drive car; and Snot Rod (voiced by Lou Romano), who shoots flames out of his exhaust pipes when he sneezes. DJ looks like a customized Scion xB. Boost could be a Mitsubishi Eclipse or a Dodge Viper. Wingo is probably a Nissan Silvia, or a 2000 Honda Civic. Snot Rod is a Plymouth Barracuda, in Vitamin C Orange gloss paint.