Jammed

You want to steal your dream car. But first you must get those other clunkers
out of the way.

Jammed is a shifting-pieces puzzle similar to the board game Rush Hour
where you are trying to move the white rectangles out of the way so the yellow
car has a clear path to the exit. Place the circle cursor onto the end of a
white or yellow car and if it changes from a pink circle with a minus sign to
a blue circle with an arrow, you can press the button to move the car. Try to
free the yellow car in the fewest moves.