LOL. You actually believe that NY drivers are good drivers!? California is the home of the true auto culture while the southern states have always been the feeders for new NASCAR talent.
"Slow" speeds? The speed limit on most Interstates is 70mph with a 10mph grace before the police bother to pull anybody over. That said, on those "long straight roads" (they're mostly out west) the average speed is in excess of 85mph. There is no speed limit in a couple of western states.
The thing is the drivers in New York HAVE to concentrate or they get eaten alive, so they tend to be more aware.
California is a nightmare to drive in, i've been involved in 3 fender benders there, every single one was down to the driver of the other vehicle not concentrating.
It's gotten to the point where i no longer rely on lifts into work when i visit there i'd sooner rent a car.
I don't think that an areas standards of driving is best judged by how many successful racing drivers are from there.
Although driving standards in the Scandinavian countries is exceptional in my experience, they've also been pretty successful at rallying over the years.
As you know the various speed limits across your country vary tremendously, likewise the "grace" given by LEO's.
In California we most of the urban freeways are restricted to 55mph, which for a clear straight multi-laned road feels very veryyyyyyy slow.
The biggest problem i've come across with drivers in the USA is simply lack of concentration, but as i say i have noticed that the this is getting to be the case in the UK now as well.
I think part of the problem is that folks are bored, cars no longer need the skill and concentration levels they once did due to ABS, traction control, stability control etc etc.
The other thing is that 15+ years ago there were very very few speed cameras in the UK, so people tended to pick their speed to suit the conditions, roads and weather they were driving in.
They also needed to keep their eye out for speed traps which sprung up pretty much anywhere.
All this meant that people generally felt they were responsible for their and the people around them safety.
Now days if you asked 50 drivers what kills in a car crash i'd bet 45 would say speed.
This is absolute nonsense as it's bad driving that kills not speed and there are no cameras invented yet that detect bad driving.
I remember getting a speeding ticket in Oklahoma on my fully loaded up touring pushbike