Drive In - Drive Out Hangars.
Just watched a video where a guy in the USA had a Kingair on his private airstrip. His hangar had auto opening doors at both ends so he taxied in to his parking bay, shut down and the rear doors closed. When he started up, both forward and aft hangar doors were open and powered out. He even had something like sunroof panels on his hangar roof that opened up presumably for ventilation, so he could refuel whilst parked in the hangar. Obviously he was not short of money. The FAA he said had no problems as it was on a private strip.
Would CASA allow this in Oz.