First - I didn't know what "stretching" means in the star rating, so I just put 3. Everything else you read in other reviews is correct - it may shift slightly if you somehow make it safe for your garage floor. However, this is a very simple solution - just don't drive into it so quickly. And if it slips forward about an inch, just slide it back. So it's not a problem. The only thing I noticed is that you have to hit hard for the light to activate. I usually just have to watch if it moves a little so I know when to stop. Also a suggestion is to buy a piece of styrofoam pipe insulation to cover the vertical rod. This will help prevent scratches on the car paint. You can buy enough 1/2 inch insulation at Home Depot/Lowe's for a few dollars and cut it to size with scissors. Look at the picture to see what it looks like.
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