Foot Position
How you habitually arrange your feet in the car is another factor that can affect your whole body function. Moving in a variety of asymmetrical ways is great, but watch for holding your body in one position for too long. When in the car, notice if you place your left foot in asymmetrical places in contrast to the right foot (ie: tucked in toward the seat, crossed over toward the right leg, etc.) Where you place the left foot may also lead you to shift, twist, and lean with your pelvis and lower back.
Most vehicles have a false pedal installed where you can place your left foot to be symmetrical with the right foot. This will help keep your knees, hips, and back in a more neutral position as well.
You might also look at the angle in which the feet tend to point. Do they point outward (duck footed), Inwood (pigeon toed), one foot goes one way and the other foot another way? Use the time in the car to work on aligning the feet to point straight forward. This will help with walking and standing and overall leg function.