Previously I indicated I was going to hunker down with a nice warm cup of MSP430FR2433, and I still love that chip & will keep it in reserve for future "small" projects, but it turns out I have a big project I need to tackle soon, particularly jarring since I'm not "in the zone" with MCU development & electronics, if you know what I mean.
I've heard somewhere around February 2022, AT&T is shutting down its 3G cell network in the USA - https://www.att.com/support/article/wireless/KM1324171/
Unfortunately many "connected" vehicles built in the past 10 years depend on 3G for