I only have experience of these Toy motas on routed, have never run one on the Ninco at Farnham, but the Liphook club bought four, all evo3 powered, and one just stood out from the rest straight off. Cornered like it was on rails, or had a copper tape magnet, while the other 3 slid all over the place. Inspection revealed that this one had grooved tyres, while the others had slicks. Worth checking when you get left behind by a seemingly identical car before you launch into the cheating accusations.
Interesting comments about the poor conductivity traits of sport track, and while I have no personal experience of it, I have heard it mentioned, and did gently enter it into the digital topic, with regard to it being a potential pitfall. Don't want to hijack this thread any further though!