Well, based on the pictures and everyone else’s observations, we know these are more than likely official traffic cars on the list:
1984 Honda City E II
1994 Honda Acty
2022 Honda e
2023 Hyundai IONIQ 5 N
1992 Mitsubishi Galant VR-4
1995 Mitsubishi Pajero (Montero) Exceed 2800 TD
1969 Nissan Fairlady Z 432
2014 Playground Box Truck
Even though we have not seen these yet, I suspect these will also likely be traffic cars as well since Playground likes to reuse assets, especially for traffic:
2010 Mazda Mazdaspeed 3
2014 Playground Bus
2014 Playground Flatbed
2018 Playground Gritter
2005 Subaru Legacy B4 2.0 GT
2008 Toyota Yaris S
It wasn’t used in Horizon 5 for some reason, especially odd since a large part of the Horizon 5’s map was dedicated to agricultural land, but this I think stands a decent chance at coming back as well, but not as likely as the above list:
2018 Playground Tractor
It probably will not appear, but this would’ve been nice to have as both a playable car and a traffic vehicle, specifically a taxi:
2003 Toyota Comfort TRD GT-Z Supercharger
And while I’m not one-hundred percent confident as to which one they will use, since we have a kei truck and a kei sportscar in the line-up, we will probably see a kei van traffic vehicle as well. So this section isn’t blank, my guess is this:
1989 Nissan S-Cargo
And so the traffic line-up isn’t entirely composed of just Japanese or Korean vehicles, I’m wagering my bets on these two as well:
1992 Mercedes-Benz 500 E
2004 Mercedes-Benz C 32 AMG
What is my list? Chopped liver?