Cops! fun but annoying!!!
When you are getting chased just drive into a large field and sit there for a while. the cops will go away soon.

Confuzed cops glich
When you are in a cop chase with only one cop chasing you, you can turn around, head to where the cop is coming from, go right past them (make sure you dont hit the cop or this will backfire) repeat this 3 or 4 times in a row then the cop will sit in the same position for 10 or so seconds. So drive!

Easy money (111,000) in 4 mins
There is a time trial called (TRAFFIC) that awards 111,000$ in 4 minutes. NOTE= you must reach expert rank to unlock this challenge.

How to lose cops easy.
You need:

Two or more cars
Ok so..
First. You need a wanted level or not.
Second. Go to nearest race and press "change car".
Third. Then quit race and get back in race.
Fourth. Then again go in race and change back your old car.
Fifth. Now cops will leave you until you get wanted level.