Tyrannosaurus Rex Was a Slowpoke

That well-imagined nightmare in which a bloodthirsty Tyrannosaurus rex is chasing the family car down a lonely road in the red-rock desert as the children scream and the gas gauge hovers on empty and the dinosaur gnashes at the rear bumper is just that: a bad dream. T. rex was a slowpoke.

The most feared and revered of the dinosaurs did not have the leg strength to run very fast, if at all, according to a computer model developed by two experts in the mechanical movements of living creatures.