In 2007, Mattel introduced a two-tiered Treasure Hunt system. A regular Treasure Hunt will feature normal paint and normal plastic wheels like other Hot Wheels cars. The production of these is rumored to be greater numbers than previous T-Hunts with one per case.
The new "Super" Treasure Hunts are much harder to find, one per 12 to 13 cases. With 72 Hot Wheels in the case, that works out to about one treasure hunt per 1,000 Hot Wheels. A Super Treasure Hunt features premium real rider rubber wheels and Spectraflame paint. Many Hot Wheels collectors have noticed in recent years that the US Basic cases (mixes) are more likely to have a Super Treasure Hunt in them compared to International Cases (Mixes).
Treasure Hunt and Super Treasure Hunt increase to 15 per year. One new model per case (mix) A through Q. Case letters I and O are not used because they look like one and zero. The 15 case letters are - A, B, C, D, E, F, G, H, J, K, L, M, N, P, and Q. One "regular" (or hidden) treasure hunt per case and Super Treasure Hunt about one in every 12 cases.
Hot Wheels stopped using the green bar on the card and the Super treasure Hunt vehicles have the "TH" graphic on them. Regular treasure hunt vehicles still had the green bar on the card and the words "treasure hunt '12" in the car.
In 2013, Mattle stopped using the green bar on the regular treasure hunt cards and added the circle with a flame symbol somewhere on the vehicle to indicate it was the treasure hunt.
Some U.S. releases in 2014 had the phrase, "This symbol on the vehicle lets you know it is hard to find and highly collectible."
In 2016, the phrase was changed to "Congratulations! This symbol means you just found a collectible treasure-hunt car!". This would be under a silver flame logo on the card for T-Hunts, Supers featured a gold logo on the card.
The flame circle symbol is on the vehicle and the card behind the car. The Silver symbol on the card is a treasure hunt and a gold symbol for a Super Treasure Hunt.