This car is the Benefactor Stirling GT. It’s a new car that was added to GTA V today and is clearly based on the Mercedes 300 SLR Uhlenhaut Coupe, but in GTA fashion has elements tweaked or added from other cars. Specifically that vent just behind the front wheels.
I swear I’ve seen this on some other real life car, but I can’t for the life of me remember where. Can any Opponauts help me with this and prove that I’m not crazy?