I am putting one in my dad's Infinity G35 because he does not have an aux port. Because the radio is so complex (has controls for everything), an aftermarket replacement would cost about $600 for the cheapest available (that's $550 just for the install and adapters). And the current radio works well so I hate to junk it.
Other than an FM Modulator, I don't see any other options. It does not have a tape deck either.
Any comments on the quality of a modulator?
For those that don't know, a modulator cuts off the signal from your antenna so you are not competing with the ota radio waves. It then sends it's own signal (via radio waves) to the radio station you have set. Because the antenna is cut off, you will not lose the station during travel.