Who’s Driving?

Gertrude and Mildred were driving to their Sunday school party. The two elderly sisters were thankful they could still drive and took turns driving the Buick they shared. Gertrude became very nervous after Mildred ran through two red lights. As they approached the next light, Mildred was talking nonstop and gave no indication that she would stop. Gertrude shouted, “Mildred, the light is red!” Mildred immediately slammed on the brakes. As she stared at the red light she said, “I’m sorry, I thought you were driving.”