Rut
There are nine cars all driving in the same place. With so many cars driving in the same place, they create a rut.
Imagine the cars spinning out in the rut. Spin spin spin. The rut gets bigger. Nine is too many cars.
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To get out of the rut you have to put in a second key (き) that turns on the thrusters. You put in the key and press the "take off" button.
Imagine turning the thrusters key, then feeling the car lift off the ground. You'll finally get out of this rut!