Britney Spears was left red-faced during a shopping trip on Tuesday (28Aug07) - when her car ran out of petrol and she had to enlist the help of police officers to push her vehicle to the nearest gas station. The Toxic singer was driving through Beverly Hills, California with her two infant sons - Sean Preston, 23 months, and Jayden James, 11 months - when her car shuddered to a halt. So an embarrassed Spears had to endure being pushed slowly along by a group of passing cops, all the while being photographed by the paparazzi.