Ya ... there are no cars on the road, but they are on a round rail. The cars are being transported on motorbikes specifically designed to pull the stage occupied by the cars.
Unfortunately, we could not follow until the destination to see the drivers who would drive the cars.
But... we can imagine, because we have also experienced it, how the drivers will drive the cars later.
They certainly can drive very freely, not necessarily always looking forward. They can wave to their parents, or hold the toys hanging above them, greet their fellow drivers freely, or they can even sleep.
Providers of the cars are certainly very meritorious for those who are certainly very forbidden by their parents to drive on the streets.
The service is fun, and provides benefits for both parties: the service provider and the customer.