Rattlesnake46319
Curmidget
Roll down your window (all the way), and your rear driver's side window too. This is especially appreciated on cars with tinted windows.
At night, do the above, but turn the interior light on and keep your hands on the wheel.
Of course, you don't have to do this, and can choose to shout, "Why the $%^ did you pull me over!? Why don't you go catch the real criminals!"
But the outcome may be very different. You takes your chances, you pays your money (or maybe not)
This. Of course, if you're in a vehicle with manual windows and get pulled over on the interstate, it's probably best to wait until the officer walks up before reaching across the vehicle to roll down the window. Putting yourself in his/her shoes goes a long way to make life easy on all involved.