On a lucky day, 70mph will cut it but on HOV lane, you go 70mph and beemers, audis and similar will stay close to kiss your rear end. Many overtake you on the entrance ramps. It is remarkably frustrating to drive on LIE. I try to avoid it like plague but the alternatives aren't that great either.I also agree with the low speed limits. On long island we have the Long Island Expressway. The speed limit is 55, but everyone is going 65-70. Its a 3 lane highway so I always stay in the middle and make sure I'm not the fastest car.
When I lived in Sweden, you don't see traffic patrol at all. All you see are cameras by the roadside, literally anywhere on the road. They are kind enough to warn you before the light so you have an option to slow down. If you don't, you get the ticket at home, no court, no discussion. You sped, so pay the ticket. But also, passing a driving test is not as easy as in the US.
AFAIK, the same is Finland. The fine calculation is automatic, like Sweden, but the fine calculation formula is different.