https://techcrunch.com/2021/02/26/road-runner-media/

If Southern California-based Road Runner Media succeeds, you’ll start seeing a lot more ads while you’re driving.

That’s because the startup is placing digital screens on the back of technicians’ vans, delivery vehicles, buses and other commercial vehicles. Those screens can show both ads and serve as a brake light — according to founder and chairman Randall Lanham, the brake light functionality is required if you’re putting a sign on the back of a vehicle.