Hi Andy Just in the process of returning my second World GT Arc Air set!! I sent the first one back to Amazon and the replacement came about 3 weeks later. All god for a day or so and then the same thing started to happen again.........with the same red Ford GT car. A very strange coincidence. So either there's a batch of faulty Ford GT's floating about or Amazon siimply sent me back the sameset that I'd returned previoulsy..........I guess we'll never know. So I'm getting a refund but not sure where to buy from next. I've seen Jadlam out there but don't know too much about them. Either that or buy direct from Scalextric? Best Andrew