Incredibly fun game, I love the ability of the day/night system, it works very well, and as a concept it's quite successful.
Cars are very customisable and the wrap editor is, as always, very nice.
Police are very aggressive, but I see this as a pro, not a con. Many complain about it - but it is supposed to be hard with people with slow cars. I think it gives an incentive to upgrade and build a faster vehicle. It also makes the police challenging, and not so easy to just leave in the dust (unless it's low heat levels)