trf_steve- a one-way with foams on carpet will give you too much steering and make the car harder to drive in general.

also i'm sure a fair few of the guys here will be planning on attending the 04 reedy race at the tamiya track in the near future.. and one-ways are banned for this race, you must have 4w drive and breaking.. so if they want to run the car they're going to have to work something out.