Who use a road navigator?

Question

I'd like to know if they are helpful as they're said to be.

Answer 1

They can be extremely helpful and extremely frustrating.  Always carry road maps with you or a road atlas of the United States.

Answer 2

Do you mean car navigation system? Extremely useful, if you drive to places you are not familiar with.

If you drive only to work, school, a store and so on, then you really do not need it, but lets say you are driving to see clients for work and every time it's a new location, then you "cannot live" without it.