Originally Posted by Mick_12Nismo

I have a little different take on the tennis ball suggestion mentioned above. Park your car in your garage exactly as you want it positioned. Then tack or nail a string to the garage ceiling and hang the tennis ball from the string so that it barely touches the center of the windshield at the attachment point of the rearview mirror (you can use any other point you want but using the mirror makes it easy to hit the exact same spot every time). Before you back the car out of the garage note how the ball appears while sitting in your seat. When returning to your garage just pull in straight, put the ball in the same position and you'll be good to go.