The Hot Wheels Track Builder Cars and Track Lot is a highly sought-after set that includes 3 mystery cars. These 1:64 scale cars feature a multi-color design and are part of the limited edition Muscle Cars character family. The set comes in an unopened box, making it a perfect addition to any diecast and toy vehicles collection. With the Hot Wheels brand known for quality and attention to detail, this set is sure to provide hours of fun for children and collectors alike.