Don, back in the day right after they created garage doors someone came up with this great invention! See, you take a tennis ball and some rope, drill a hole through the ball, run the rope through the ball and tie a big knot on one end.
Find out where you want to park your car in the garage, If it is half way into the next room so be it (I would like to have a bigger garage also), Then attach the rope to the ceiling just at the point where the ball SMACKS YOU IN THE HEAD! on the ball attach a sign that say's STOP HERE!
So the next time you pull the car into the garage and that ball with the sign smacks you in the head just stop there and WALA no need to travel further!
Now if that doesn’t work there is this process with two balls where the first ball should smack the back of your head prior to hitting the second one, very complicated so try the single ball method first. I have also heard of some making the ball out of steel for a more precise parking method.
And I agree Duct tape fixes everything and now comes in Yellow!
Also, I thought MikeC did this also... Something about a neutral safety switch....? how soon we forget!