6. 1968: Hot Wheels
Fun Fact: There were 16 cars in the original Hot Wheels lineup, and they were all based on an actual customized vehicle.: Beatnick Bandit, Deora, Ford J Car, Hot Heap, Python, Silhouette, Custom Barracuda, Custom Camaro, Custom Corvette, Custom Cougar, Custom El Dorado, Custom Firebird, Custom Fleetside, Custom Mustang, Custom Thunderbird, Custom Volkswagen.

Today there are more Hot Wheels models than real cars in the world, with an estimated 4 billion toy cars in existence.