Disney Cars die-cast are made by Mattel. They are based on the movie, Disney Cars. They make 1/55, and 1/43 scale diecast. One of the rarest diecast sets would be the Convoy Brothers set, Released at the 2012 SDCC, Ranging at a price of around $100, and an online price of $200 - $300.
For more information go to http://mattel.com/cars .