Stellantis is already doing this on new cars in the US. (Dodge, Chrysler, Jeep, Maserati, FiAT, etc) Soon as you press the brakes and come to a stop ads play on your infotainment system. Have the car in park? Yep more ads.
You know I only ever get more glad that I didn't learn to drive and went with cycling instead. It started due to not being able to afford it, now I won't own their shit and I will be happy.