Simple things: Quick disconnect steering hub - main disconnect - ignition cut off - pull rotor - coil wire - fuel shut off - unhook the S hook from accelerator cable from the pedal - pedal lock - Club - Doberman & or Rottweiler - Tracker . For laughs in HS, we would pull a coil wire, put a elongated pebble in the dizzy and plug the coil wire back in ~
My best guess it that the speedsters heisted out of the Vintage Speedster building etc. were quickly put into a Port trailer / container and when far away.