Does a misdemeanor warrant give a police officer probable cause to search a vehicle during a traffic stop?

During any arrest, while you were in your car, the officer has the right and duty to himself to check as thoroughly as possible that he and you are not in danger from any contraband guns, drugs, etc. It is part of the standard procedure of any arrest in the U.S. when you are stopped in your car. Also, normally the car will be towed and in bigger cities, inventoried for your protection, as well as theirs. Anything illegal in your car is generally fair game when you are arresed while in your car.