Ultra-Rare Factory Error Card Auction (60-100€) – Blue Cadillac Project GTP Hypercar in Corvette Stingray Card – Complete Matching Set Up for auction is a truly unique collector’s item: a factory error card featuring the Blue Cadillac Project GTP Hypercar printed on a Blue Corvette Stingray card backing. This kind of misprint is extremely rare and highly sought after by serious collectors and enthusiasts of Hot Wheels/Matchbox-style diecast cards. To make this listing even more special, I am including the standard versions of both cars: Correct Cadillac Project GTP Hypercar (blue) Correct Corvette Stingray (blue) This gives you the complete trio/set: Error card – Cadillac GTP car on Corvette packaging Normal Cadillac on Cadillac card Normal Corvette on Corvette card Perfect for error hunters, Cadillac or Corvette fans, or anyone who appreciates rare production mistakes. All cards are in excellent condition, straight from the factory packaging, stored carefully. Highlights: Authentic packaging error (unopened) All cars in matching blue color theme Complete and ready for display Hard to find — a great investment piece Don’t miss your chance to own this one-of-a-kind error + full matching set combo. A standout addition to any diecast collection!