From Disney·Pixar's Cars 2, here we have Jason Hubkap... yet another new, never before released Mattel 1:55 scale diecast! This character hit shelves late last year (around fall time, but I didn't find him until recently) and is part of the 2016 "Paris Parts Market" sub-series (#5/6).
As shown in the screenshot above, Jason is a parts vendor briefly seen at the car parts black market (in the scene directly after Tomber is tased by Holley Shiftwell).
I was able to find this one at Target right before Christmas, but I have yet to seem him since. He definitely was a harder one for me to track down. If you never found Jason in stores, you can always check out eBay HERE or Amazon using the direct link below.
Best of luck all my fellow Cars collectors!