I'm no expert in operating Victors but I have been involved in flight test for many years and that included planning fast taxi runs. If the aircraft is not airworthy or not intended to fly then we took measures to ensure it didn't get airborne accidentally. This included not extending the flaps, making sure the thrust was reduced before lifting the nose etc. etc.
Planned short hops were actually more dangerous than getting airborne anyway because of the reduced stopping distance and inherent difficulty of stopping well after V1.