[DonRotolo]

Vacuum can be used for many things besides picking things up.

If you can figure out a way to store vacuum in a sealed tank (think solenoid valves) and prevent the vacuum from 'leaking' out through the venturi (think timing of air supply), then yes, you should be able to store vacuum prior to a match, by "charging" the tank in the pits, sealing it up.

Of course, this is merely my opinion, I cant say if it is legal or not, but this has been done by teams last year.

Don