Another heavy implementation. How will speed be determined from the postings? Cameras, GPS with cellular network, short range radio broadcasts? All bad choices that can be interfered with. If the speed can't be determined, will the car lock itself to a slow dangerous speed like 40 mph?
I won't want to drive a car where I could get throttled to 40 and get rear ended by a semi because some pajeet broke some node.js and now the speed governors couldn't sync.
Anything they can come up with will work poorly, be hacked and defeated in hours or days. Just more nany state trying to turn the whole fucking planet into a bubble wrapped safe space.
They say it's for that, it's really for complete populace control.
A good navigation system already knows where speed limits begin and end, so this would be easy to implement. You'd better hope it updates over cellular (another privacy nightmare) otherwise you're going to be stuck with speed limits that may not be correct, or be on roads that didn't exist when the car was made.
I see that my GPS knows the speed of the roads I'm on, so there's that.
Unsafe at any speed!
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