I parked my MS in the driveway, and proceeded to position my California HOV stickers for attachment to the rear bumper - right, left and center. Measuring for the stickers on the bumper sides, I notice that the right rear bumper is almost 2 inches higher than the left rear. What's happening? The front bumper sides are with 1/4 inch. Cycling the air suspension from Very High to Low didn't produce any changes. Then I pull my car back into the garage and repeat the measurement. All corners are within 1/4" now! Then I dawned on me - pulling out a level, I measure from the rear off the TESLA chrome strip, and in front under the Tesla nose. Front and rear are level in the garage. Pulling back out to the driveway - I measure again, and guess what? Both front and rear are ALSO level! It seems that the car has compensated for the fact that my driveway slopes down heavily, and much more so on the right side. The Model S has automatically leveled itself using the air suspension system. Is this normal for any other car with air suspension? If not, why and how did Tesla do this?