More than 720 vehicles passed through the checkpoint, which was held from 10:20 p.m. Friday to 2 a.m. Saturday in the 1800 block of Palm Avenue, near Interstate 5, according to San Diego police Officer Mark McCullough.Officers arrested one suspected drunken driver at the checkpoint and another nearby, McCullough said."Drinking alcohol and driving do not mix," McCullough said. "If you plan to consume alcohol, you should also plan not to get behind the wheel of a vehicle or ride a motorcycle."The checkpoint was part of the national Drive Sober or Get Pulled Over campaign that combines high-visibility enforcement with heightened public awareness through publicity, McCullough said. The campaign is led by the California Office of Traffic Safety and the National Highway Traffic Safety Administration, along with the California Avoid DUI Taskforce.The checkpoint was funded by a grant from UC Berkeley, McCullough said.