Can't retract to go under TUNNEL?

[Racer26]

Originally Posted by Dad1279

That's my take also, upon re-reading the rules, with the exception of deploying 'mechanisms' which must follow the sizing & time rules.

Game animations often take 'liberties' Also, in this animation, the eyes that 'retract' are mechanisms.

...This seems like the same sort of MECHANISM versus ROBOT argument that occured in 2008 with 1519 and the Speed Racer/Fezzik incident. What defines a MECHANISM and makes the distinction from say, and frame that changes dimensions?