Suddenly, everyone is stuck in a huge traffic jam. "What's going on up there?" shouts a little boy on his tricycle. Since the road worker doesn't know, they set off: on a unicycle, scooter, skateboard, roller skates, in a buggy, and in a wheelchair. We meet fifty vehicles and their owners, some of whom are terribly annoyed (like the driver of the concrete mixer) or quite happy (like the children on the school bus). But what actually happened? A sensation: A dino has hatched from its egg!.