iI KNOW NOTHING ABOUT THESE THE CARS DO WORK BUT LIGHTS ONLY CAME ON ONCE ON THE GREEN CARSET IS MOSTLY COMPLETE MINUS 2 STRUTS AND THE FLAGS ON CAR IS MINUS BACK TIRES WHEELS ARE THERE SELLING AS IS THE CARS WORK WHEN I PUT THWEM ON THE TRACK WITH CONTRLERS BUT DONT KNOW HOW GOOD THEY WOULD WORK WHEN IT IS ALL PUT TOGETHER SEND ME YOUR ZIP CODE AS SHIPPING MAY BE CHEAPER THAN QUOTED THANKS