It looks like Hot Wheels goofed on a run of Scion FR-S die cast models and threw some Ds on that. The Scion FR-S Hot Wheels car normally comes with appropriately sized wheels, but some three packs that include the FR-S have huge wheels on the sports car, making it look more like a donk built for cruising down the street with the system bumping than a corner carving machine.
In case you’re unfamiliar with toys and collectibles, every once in a while a minor mistake will make it into production (or a small change will be purposely made in low quantities), creating a variation that is more rare and thus more collectible and valuable than the standard toy. The Hot Wheels Scion FR-S variation may be valuable in a few years once the mistake is out of production. At the very least, it will make a fun collectible for Scion FR-S owners.
The Lamley Group discovered this variation and they say that the donk FR-S can be found in 3-packs from Walmart stores. You can tell the variation Hot Wheels FR-S by the missing bit of paint in the white stripe down the side.