I got this vintage item at an auction of mostly old Lionel trains, where they had a few race car sets. All the parts are in the box, including extra track, but no cars. I saw a pair of cars on Ebay, but someone sniped me at the last second. Since then they are rare to come by. I was wondering if maybe I could use cars from another set. Does anyone know if cars from any other slot car sets will work with Mattel's Hot Wheels Thundershift 500?