Audio Systems: put a tv in a car, dash unit, ebay

Question
hi Peter G. Lee  
yes my question is how to put a television in a car?

Answer
What TV, What car, what screens required and where, DVD or just TV ? (and don't forget must NOT be able to be seen by the driver!)
Hook into radio audio system? I don't think you have thought this question through have you?
Let me have more info and I might be able to help or just by an in-dash unit with TV off of Ebay and follow the instructions
Peter