I'm the original poster of this thread. Thanks for all the suggestions!
I think next time we'll take 81 down from Binghamton to mid-Va.and we'll see how it goes.
For 35 years I had a job that required me to be behind the wheel in all types of traffic. I accomplished this without an accident or ticket. I've never seen the abrupt lane changing and speeding that I saw on the Garden State Pkwy on our return trip. I can assure you all that I didn't venture into the middle or left lane either.
I guess being on that road is a lose-lose situation. You can be ticketed for both impeding the flow of traffic and speeding at the same time!
New Jersey should use remote ticket cams ... with what they'd collect, they'd be able to balance their state budget!