A few years ago I got a Sloter Ferrari 312PB on sale. The car is a good non-magnet runner. Since it is very light it is fast even though it is powered by a Scalextric/Fly type motor. The stock rubber tires have good grip. The Sloter car has a lot of ground clearence, but it is closer to scale than the Slot.it version of the 312PB, which is too long. The car wanted to flip in the corners so I put a slab of lead on the bottom.