I hope that when the new bikes are available we can play them on all the tracks.
I really liked the Banshee when it arrived on Evo but it was disappointing not to be able to play the original tracks with it.
I hate to break it to you but if you go on your garage there are the four spaces to the right. But if you look further, theres another 8 identical platforms, that makes 12! 2 new bikes every DLC!