Until it is measured, not known. Yet how you miss it when it has gone. What is it?

What goes up but never comes down?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

If in a car race, the man who came two places in front of the last man finished one ahead of the man who came fifth, how many contestants were there?

If two's company, and three's a crowd, then whats four and five ?

'Ferrari driver' easily beats the 'force driver' in a two-car race. How did Indian newspapers truthfully report so to look as a 'force drive' had outdone the 'Ferrari driver'? Think!!!

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

What word is pronounced the same if you take away four of its five letters?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

I always drive my customer away.

Who am I?