Gmod 11, or whatever version they're at right now.
I watched a posted a comment.
Though I forgot to add that after awhile the music got a little annoying. and you shouldn't freeze the vehicles when you test their Defensive Ability. That way you know how it would affect them when they're driving it and they get shot.
Hey, thanks. The music is really old music from a game I used to play on the Sega GenCIA, and it loops twice, so I guess that might have been too much.
And, if I were to have the bubble car unfrozen, it would fly off somewhere.
EDIT: I think that showing how it's created will be quite hard, since I want to review other people's contraptions.