I believe that was directorial liberty. If it did in reality, would it not present a paradox in RW? I don't think a time machine can physically move in space. It must remain stationary as evidenced by Taylor observing storefronts across the street change as time passed in reverse. If the traveller wants to traverse space he can take a horse and buggy or a space rocket. I don't believe the machine is able to affect the fabric of the univers and speed up or slow down exterior time at all. The machine creates its own variable "time envelope", able to reverse or advance time within the envelope. A "time bubble". ========================================================= p.s. An excellent movie about shortterm time travel is "Deja Vu" with Denzel Wahington. In the movie Washington is actually able to physically change a previous event, saving lives.