I think it's the first time I've ever seen a double contraction like this:
"That’s, let’s be optimistic, a 30 to 50 mile radius at least in which we are the only two people left. I can’t even calculate how many people that means just vanished.” If I wasn’t driving, I’d’ve squeezed my eyes shut and shrunk down in the seat, to try to combat the thoughts this line of talk was forcing into my mind. source
Is this correct standard English?
How does one pronounce that thing?