Yes, I have I gotten ride from NYC to a city in New Jersey farther than Newark. I would think it just depends on finding a driver that's willing to leave NYC. A NYC registered driver is also allowed to pick up passengers and bring them to NYC, unlike a NJ driver who can only drop off in New York but not pick up. read more
If you get caught picking up with Uber from Newark Airport you will get a nice big fine, you should keep up with the news, my friend went to court a week ago for this issue, the fine was $2500, and was reduced to $1250, same thing anywhere in NJ, only drop off, no pickup. read more