Had a crazy thought when i saw the pics outside your garage. Reminded me of when I was using a workmate as a test stand for my MW54, which despite steel legs and no castors at full revs propelled itself down the drive.
Now if you put your jet engine on the back of your work bench put steerable castors on the front you could lie down on the bottom piece fire up and have lots of fun.
Joking apart great idea for a workbench must make one myself.