Answer:
I come without being fetched at night, hide away as soon as daylight strikes. Although I may look small, I am much mightier than what you can imagine. What am I?
Brown I am and much admired. Many horses have I tried. Tire a horse and worry a man, tell me this riddle if you can. What am I?
I am black within and red without With four corners round about.
I am rubber you can eat!
I get paid when I drive away my customers. What am I?
What is lighter than what it is made of?