If you ctrl-esc to bring up the start menu during a maze, you can use the start menu as a "bridge" to get over walls and get insane times. You should probably fix this.
At the conclusion of the game the entire right half of my hotel was elevators. There should probably be a super-high-capacity super-high-speed elevator that is unlocked a 4 stars.
 "Maze 3")
 "Theme Hotel")