This is a result of natural aging.
Partial Set Hot Wheels Loop Stunt Champion Track Dual-Track Loop Dual Launch
10 Pack - Hot Wheels Track Wall Mount Compatible Track Kids Room Playroom
Curve Track Pieces Compatible with Hot Wheels - 10-Pack 90-Degree High-Banked Tu
Race Track Toys 78' Dual Track Transport Truck with 12 Die-Cast Car for Kids 3-6
Hot Wheels 10-Pack of Toy Race Cars, Includes 10-pack Multicolor
Hot Wheels 10-Car Gift Set 10-Pack Diecast Cars 1:64 2004 Multicolor 10 cars
