Answer:
Whoever makes it, tells it not. Whoever takes it, knows it not. Whoever knows it, wants it not. What am I?
Some will use me, others not. Some have remembered, others forgot. For profit or gain, I'm used expertly. I can't be picked off the ground or tossed into the sea. What am I?
When you take away the whole from me, there is always some left. What am I?
When you are inside me you will be encouraged to slam other cars.
Glittering points that downward thrust. Sparkling spears that never rust.
It rows quickly with four oars but never comes out from under his own roof. What is it?