Answer:
I shoot but never kills
A trail, a union, together tied. Come across me and you will find you cannot change the course I'm on. Without me you cannot travel on. What am I?
Of these things - I have two. One for me - and one for you. And when you ask about the price I simply smile and nod twice.
A thousand wheels, but move I do not. Call me what I am, call me a lot. What am I?
I am heavy forward but backward I'm not.
The strangest creature you'll ever find: Two eyes in front and many many more behind.