When metabolism ceases with no prospect of starting again, we call it death . Machines also convert materials and energy for their needs, create waste, and could be said to die. Life undergoes evolution . Notably, simpler forms are succeeded by forms with greater organization. Cars evolve also, in their way.
Computers do, too.
It is tempting to say that motor vehicle traffic is simply the things that move along the streets and highways cars and trucks. Of course buses and motorcycles should be included, although they are prohibited on some streets. But what about wheelchairs, bicycles and skateboards sometimes these are motorized. As it turns out, motor vehicle traffic is quite hard to define. This makes it difficult to discern a clear dividing line between cars and trucks and the rocks and pebbles from which they probably evolved.