Robin,
I know that Marty has at least 1 but it won’t ever see track time. 😛
I’m looking at the Coke IMSA car, well been looking for over a year. It won’t work on the Scalextric track due to the lanes being too narrow. You have to run at least Carrera track as I think Ninco is still too narrow to run the wider 1/24 cars.