Need some advice on I-Pods before i buy.

Basically i will be using it mainly for listening to in the car.

I have heard that you can get something that your i-pod fits into and basically makes it like a radio broadcast...IE, you then tune your car radio into for instance 97fm and it picks up your i-pod...............Is this right?

OR

Is there any other way of doing it without using a shit Tape coverter thing