The last NASCAR car to make me interested in the street going version was the Chevy SS. It was unique and being the cup car gave it something to stand on. Camaros and Mustangs stand alone and won’t ever carry an identity as “what they use in NASCAR” like the SS did.
Automotive OEMs could move beyond the “Win on Sunday, Sell on Monday” mentality and embrace a branding-driven approach. Focus on cultivating passion for motorsports, letting that enthusiasm for racing translate directly into the products they build and the community they create.