I agree with Kay. There is no car mode in Tunein for iPad. Anywhere. Some people have set their iPad up in their car using mounts and also the iPad screen is larger than iPhone thereby making it safer. If the app clearly states car mode then it should be there. I don't have it set up due to o 3G but I do know of people who do and they live in UK.
Sent from my one and only original iPad using iPF