Apparently the person above has more money than time or experience.
The cassettte adapter is the second most consistent (after Aux jack) A decent digital FM tuner transmitter (4 frequencies) starts at $19 to $25. The tunable ones are $35-$40(Wal-mart, Ebay, all over) I just bought a new car stereo with a standard outboard aux (ipod in their terms) jack that can be mounted anywhere for $148 that also plays mp3, wma, etc... with this option, your huge card can be filled with games and videos as you can carry 10-20 cds per CD-R. And new cars with these options start around $12,00 to 16,000. $28,500 would buy much nicer car but not much better PDA input.
