Sorry to hear about you smashing your toys!

Here are some tips I've heard other people use to prevent driving into the garage with bikes on the roof rack:

1) Hide the garage door opener in the glove box or someplace different than it's usual location. Then when you wonder what you did with that darn opener, hopefully you will remember the bikes on top.

2) After pulling the car out of the garage and then affixing the bikes, we put a box or empty trash can in the front center of the bay where the car would go. This way you cannot pull the car in without getting out to move the item first. Getting out of the car will hopefully make you notice those bikes up there too -- take them off before getting into the car again.

Of course you have to remember to do these things too!

Hope that helps.

-Xinga