A new study has been released, looking into a more accurate estimate of Tyrannosaur walking speeds.
New modelling points to much slower speeds than previously thought; now estimated to be approx. 3mph.
"Must go faster"......maybe not.
Link:
Walk the dinosaur: New biomechanical model shows Tyrannosaurus rex in a swinging gait https://phys.org/news/2021-04-dinosaur-biomechanical-tyrannosaurus-rex-gait.html