Came up with some explanations for some things the show never explains

To the best of my knowledge, the show has never explained why AJ and Gabby are the only kids in Axle City, or why Blaze is the only monster truck with a driver.

The obvious answer is that it's a kid TV show, and little kids don't need explanations for that kind of stuff.

But, to make my brain not go nuts every time my son watches this, I've come up with an explanation: AJ and Gabby are imagining everything that happens in the show.