Hot Wheels Teenage Mutant Ninja Turtles Leonardo Character Car. Hot Wheels has been challenging the limits since 1968, passionately creating the coolest and craziest toy cars and tracks for non-stop fun. Hot Wheels evolved from a line of 16 die-cast cars into a global lifestyle brand dedicated to fast action and epic stunts. Today, the Hot Wheels line provides variety and freshness with new vehicles every year, and different Mini Collections appeal to car enthusiasts and collectors. Recommended for ages 3+