Asking coz I just did a quick comparison and it seems to depend but for comparison I have a really old AMD Athlon "e" processor (like literally September 2009 is when it came out according to some quick Google search, tho I probably bought it a few months later than that but still ...) that runs at ~45W TDP. In idle conditions, it typically consumes around 10 to 15 watts (internet wisdom, not kill-a-watt-wisdom).
Some napkin math says it would cost me about 40 years worth of amortization to replace this at my current power rates for this system. So why would I replace it? And even with some EU countries' power rates we seem to be at 5-10 years amortization upon replacement. I've been running this motherboard, CPU + RAM combo for ~15 years now it seems, replacing only the hard drives every ~3 years. And the tower it's in is about 25 years old.
Oh I forgot, I think I had to buy two new CR2032 batteries during those years (CMOS battery).
Now granted, this processor can basically do "nothing" in comparison to a current system I might buy. But I also don't need more for what it does.
Turns out that random people can add you to groups, send spam and from what I can see you can do nothing to prevent it. I've disabled it.
So don't fret too much about not having it.
If not, what happens if an accident occurs and the cab keeps on driving due to a software bug ?
If some accident or bug occurs, they currently just stop completely until a person comes out