None of those numbers address the question at issue, which is,
"What percentage of vehicles used in Manattan on a given day are from outside Manhattan?"
>Of those working in Manhattan, 30% commute from within Manhattan.
Most commuters terminating in Manhattan are on mass transit so this stat doesn't really speak to the car question. Also a lot of vehicular traffic in Manhattan is not to do with commuting.
(I suspect the person you are replying to is incorrect, incidentally; I take no position in this argument. Your comment is a bit of a non sequitur is all.)