Answer:
It is a common and favored clothing material among biker gangs and superheroes.
If you drive on this, pedestrians and the police will be pretty upset with you.
Four kings of whom I am one lord. Often on deck but never on board. Though I have a large heart, I am always seen at war. During which I always wear a suit, but never a suit of armor. Who or what am I?
You are on an electric train. Which direction will the smoke fly in?
They come out at night without being called, and are lost in the day without being stolen. What are they?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?