Depends on what surface. Carpet, Awesomatix A12, Xray, Roche and CRC are all great cars with the A12 being the car to beat at the moment. Asphalt I don't run, but would think the same cars would work great. Right now indoor 12th season is slow, so distributors and shops don't like to hang onto kits that may be replaced or updated over the summer. That may be a reason for the slim picking at the moment.