Start by using a claybar. Use it on the paint and the windows. It's the least aggressive method. Don't use rubbing compound, you only have so much clearcoat.
If there's a body shop supply store near you. look for a claybar specifically to remove overspray. It's a little different texture than the consumer-grade bars. But if not, try the Mothers or Meguiar's kit. I'll bet claying will work. If not hit me back and we'll get into light and medium-cut paint cleaners...but only after U try clay.
If there's a body shop supply store near you. look for a claybar specifically to remove overspray. It's a little different texture than the consumer-grade bars. But if not, try the Mothers or Meguiar's kit. I'll bet claying will work. If not hit me back and we'll get into light and medium-cut paint cleaners...but only after U try clay.