I've just submitted v1.003 to the appstore. It contains numerous bug fixes and UI improvements.
Also, you can create cars now. I planned to put in planes and boats also but I just didn't want to delay the release any longer so they can go in the next one.
I've moved the maps into the archive so only the streaming music is outside for now. I'm hoping to move music inside the archive also next time and have an auto-update feature that checks this website for new versions and downloads/installs them for you. It's a feature people have asked for and seems like a good idea even though the updates haven't been that frequent yet.