The vehicles handling is what it is. Do I like it? No. Every vehicle is super stiff, my Patriot has about the same amount of body roll in a corner as my Infernus, they made all the cars feel too similar. I have gotten used to it and can tell the (slight) differences each car has but it's not visually apparent. My Patriot won't corner as fast as my Infernus but instead of being able to see my Patriot body roll through a corner its tires just loose traction and it slides (perfectly level). It just looks silly.
But the real issue is how cars react with each other. It's blatantly obvious that something is wrong with the physics. Here is an example: You could take a 3,200 pound 2wd compact car and I could take my 6,500 pound 4wd Patriot, we could bring them nose to nose and you sit there with your brakes on and I'll floor it, I will be spinning all 4 of my wheels and your compact car won't budge. It's like the actual physics have been done away with and the coding of the tires now determines all.
You can take a moped and pit maneuver an 18 wheeler or other huge vehicle...that's not right.
A super car can off road faster than an off road vehicle...that's not right.
The transfer of momentum is all screwed up. A semi truck slows down to almost a stop if a cop goes in front of it to box it in. A truck like that would have no problem pushing a car at speeds, even if all of the cars tires were on full lock and the thing was in park.
It completely changes the way the game is played. No longer can I use my car as a weapon against people taking cover behind their own car. I can't push their car on top of them anymore unless I'm going mach 20. I now have to get out and have a shoot out with them.
It is in no way an improvement over how it used to be.