Answer:
I have two bodies joined together as one. When standing still, I run and run. What am I?
A man who was outside in the rain without an umbrella or hat didn't get a single hair on his head wet. Why?
I am a portal to another world which you cannot enter. Only you can see me but I can't see you.
I am a rock group with four members all of whom died in plane crashes. Who am I?
I spend the day at the window go to the table for meals and hide at night.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.