Vehicles...

[Myke]

But why have a totally different vehicle hander compared to the one in 2.8?

There was nothing wrong with the one in 2.8.

I can't comment on this with hard evidence, but.. I don't know if i heard it from people from time to time but i'm certain the old handler was a problem in some way and that's why it was redone.
I think it was just redone because the new one could handle more cars.
Could have also been to clean up the code.

On the other-hand i could be completally wrong and probably am, I just know there was a reason to why it was redone.