I didn't explain that too well. I like to drive the car straight into the garage and then we have a door into the house from the garage. The RX fits into the garage, but I leave the garage door open to unload the boot (there is only a few inches of room once the garage door is shut). However, with the garage door open (and therefore above the car), the tailgate will hit the garage door when the tailgate is fully open. With a car (as opposed to an SUV) this wouldn't be an issue, because of the height difference. Hope that makes sense now....
Simon