I too, have had problems w/BMW and iPod Classic

I have has a classic iPod in several Infinitis with no problems. Now when I start up my new car (BMW 535i) and start to play podcasts the voices are faster than normal-way faster. When I reboot the Ipod it plays normally again until I turn the car off, and re-start it about an hour or so later when the problem repeats itself When I stop the car, and restart it immediately there is no problem. Getting annoying to have to be-boot every time I want to take a short trip. This didn't start until about 2 weeks after I bought the car. Any suggestion?