The concept of “chase cars” has been around for 30+ years, but it’s something I’ve only found out about by setting up Modelmatic - and I like it!
Chase cars are limited edition versions of models distributed with regular cars. It’s a neat trick by manufacturers - the fact there’s fewer of them will make them more collectible, and much harder to find.
I’m still learning about which brands produce chase cars, and how to identify them, but I’m getting there with some of the brands we stock.
Greenlight call their chase cars “Green Machines”. They’re found in their standard items, and their budget priced (Motor World) range. They’re generally 2% of any production.
They can be identified by the inclusion of emerald-green metallic paint on the body, chassis, rims, interiors or tyres. Some Green Machines have a combination. I’ve also seen the addition of extra irregular features, such as blue metallic rims.
Here's a couple of examples:
M2 simply call their Chase cars “chases”. M2 Chases can have yellow paint where you’d expect to see chrome, or gold additions/variations. More recently, they've also been producing much harder to find raw versions.
Here’s a few examples:
M2 Machines Detroit-Muscle Release 28 - 1970 Dodge Super Bee 383. The car on the right is the chase car, limited to 500 production world wide.
Hot Wheel call their chases "Treasure Hunts" and "Super Treasure Hunts", the Super ones being much rarer and therefore sought-after.
Both can usually be identified by the flame symbol hidden behind the cars on the blisters and flame or TH symbols on the cars themselves. Supers will have Real Rider typres (rubber).
Take a look at Hot Wheels pages on wikia.com to see what you need to be looking for.