Sorry to say that this exactly happened two days before with me, while driving I saw some sparks on road infront of my car and the next moment a cigarette butt hit my car windscreen, giving the impression that the person driving his car in front of me threw a lighted cigarette butt on road and that bumped.

How if the same burning cigarette butt enter the engine through front grill and get stuck into some system damaging some oil hose, rubber or plastic and in worse case turn out to be a big fire?

I thanked god that nothing happen to car windscreen...otherwise it's a long process to get it reported....then get the insurance claim and repair the car.

In Malaysia, I have noticed that there are warning sticker posted inside of cars that do not throw anything on road or outside this car