Which speed reaches a Tiranossauro rex?

Remembers the scene of the film “the Park of the Dinossauros” where the Tiranossauro rex pursues a Jeep the 80 km/h? Thing of cinema. The biologist John Hutchinson, of the Stanford University, and Mariano engineer Garci'a, of Cornell, guarantees that the most famous carnivore was so fast as a hen. The speed of the extinct animal was of at least 16 km/h (as of a mouse), and of in 40 maximum km/h (the same that a dog). Source: IstoÉ.