Like 1ft off my back bumper waiting to leave a shopping center in a long line of cars. Because almost rear ending me will make traffic move faster? Continued making impulsive maneuvers after exiting the shopping center. Selected a lane, came to a stop at the red light, realized how many cars were in front of them, tried to swerve left into a different lane with less cars and almost cut off oncoming traffic. Then threw the right blinker on and got into the right turn lane instead. Very impatient driver.