What exactly counts as the mainstream media nowadays?

Cable news?

I haven’t had cable TV for probably 20 years now.

Internet news?

Which ones? There seems to be an endless number of them

I can do both at the same time

Your speedometer likely wasn’t accurate before the tire size change

I use my phone as a nav device pretty much everywhere I go with different rental cars and the speedometer is never accurate to the GPS measured speed or the radar based speed limit warning signs I see sometimes

The GPS always matches the radar signs, so I tend to trust it and use it more than the factory speedometer