3G has been mainstream in the US since the mid 2000s. Granted it depends on when you purchase your car, but getting almost 20 years out of the technology is pretty good. Most cars will be scrap after that long. I'm not sure where you came up with 5 years.
Did you miss that cars are still being made that are 3g-only? And I’d be willing to bet that cars didn’t have 3g modems until long after 3g was first available.
