Tyrannosaurs are theropod dinosaurs. The theropods were the smartest group of dinosaurs. Although T-rex was smart, paleontologists believe that it wasn't as smart as Troodon, which had about the same intelligence as modern birds.
Well, first you start by making sense when you ask the question.
After that, you look in a book and realize "tyrannosaur" has been extinct for about 65,000,000 years, and you won't be "getting" it...
Its good for the environment, so they say, even though there are plenty of other MUCH better things out there for the environment. The smart is just showing it is 'Smart' for the environment It...
This car is very smart because it doesn't use that much battery and gas. It is also smart because it doesn't take that much space like the Beetle and Motorcycle.