In my Miata I have an Ipod in the trunk. There is a 12 volt adapter running it and I have taken the remote headphone cord and extended it by soldering about 10 feet of wire. The remote is in the center armrest. I just keep it on random and flip through the songs I do not feel like. I plan on doing the same on the Elise. The adapter turns off when the car turns off. If I forget to put the Ipod on pause then the worst that will happen is the ipods battery runs down not the cars.