Children of all ages (6 and up) have enjoyed this game that I have given several times.  It is challenging for adults, too.  Each card sets up the vehicles in different configurations.  The player has to find a way to get the red car out of rush hour traffic jams and to the exit space, by moving the vehicles around.  It requires patience, concentration, motor coordination, and spatial reasoning in varied degrees of difficulty.  There are other versions by ThinkFun.