Previous thought on this subject had been to create a rail-runner that steers to the outside rail. Negative cant on the DFW, raised NDFW, and negative cant on the rears (which are inset). I don't, however, remember hearing the results or seeing any testing.
I am, at present, building an experimental car that runs its front wheels within the confines of the rail of a Best Track (so, very similar effect as the track you're using).