I made a Go-Kart track that is based on both versions of the race track Hyper Spaceway; from Crash Nitro Kart (2003) and Crash Team Racing Nitro-Fueled (2019).
As you'll see in the Rides Window, the Go-Karts is made up of only one Opened Ride - I sent half the karts onto a second Dummy tracked ride that is closed, so that they can travel on the other side of the race track. The karts still count their laps properly.

The following is tangential, but I noticed I made a Crash Team Racing (CTR) race track in RollerCoaster Tycoon (RCT) for the Teleporting Ride Contest (TRC).
So that means my submission is a RCT TRC CTR race track. Weird.