Is your garage not quite up to par in the technology area? Sounds like you need to install some electronics to help out. A Garage Monitor might be what you are looking for.
“Need to know if the garage door is open? Need to know if you pulled in far enough for the door to close without hitting your bike? Need to know all this with web access… I present the garage monitor 3000.
When the car reaches the right spot, the LED turns from green to red.
This is a work in progress, this is just version 1.0, I think it will go through a few changes to make it even better.”