"The most challenging shots were to get our 118 guys lifting taxi cabs and a Great North Western train," said Gavin Wellsman, Head of 2D at The Mill. "The taxi lift was achieved with clever movable rigging to give the lift a natural look and the trains were built in CG from scratch. We worked closely with Director Kevin Thomas to build a rig that would make these shots believable. We gave the art department the exact dimensions of the bottom of our full-size CG train so that the contact points and shadows would match perfectly and you really felt they were working as a team to lift a heavy object above their heads."