Cars drive along the Interstate 405 in Los Angeles, California, U.S. April 27, 2026. REUTERS/Daniel Cole Purchase Licensing Rights, opens new tab NEW YORK, June 11 (Reuters) - U.S. vacationers are barreling into peak summer driving season just as the gasoline market faces a supply crunch, with resilient domestic demand and surging fuel exports threatening to strain thin inventories and send pump prices climbing.