Left side lower than right...weird

[Yazon]

Just noticed that the rear of the car is lower than the right side. Can only see it from behind. So i got tape measure and saw that the left edge of the bumper is about an inch lower than the right edge.

The car is not overloaded, i weight only 180lbs, so i don't think it's from me being fat. It does have a full tank of gas, but i don't see how that would make such a difference.

Any ideas on what could it be? Anyone else seen this with their HL?

[jjez]

And I thought this only happened with my cars. I noticed the same thing with my last 3 cars...2008 highlander, 2001 Infiniti QX4, 1994 Honda Civic. With each one the left side was lower then the right looking at the back. I weigh 175 lbs and thought since I'm usually the only one in the car it must have compressed the driver side springs. I'm puzzled too because it always seems to be my car that looks like this when I compare to all the surrounding cars in a parking lot. At least I feel better finally knowing someone else has experienced this. Also I usually fill my tank when it gets down to half a tank and thought maybe the gas tank is situated more on the driver side and putting more weight on that side. Anyone else experience this lower left?