I think "car mounts" would indeed be an unwelcome addition to the Spiral. Your idea is very creative, but car mounts would fail miserably to fit in along with the mostly pre-industrial themed worlds of the Spiral.
Although an older car like the ones seen in Marleybone would be okay with me.
I disagree. Some people could go on other wizards, and use the mount jump on them or just put the mount over them. NOT fun. Its a cool idea, but i disagree.
This idea is not new. If you search the forum for "car mount" you will find that others (myself included) have already put this idea out there. Kings Isle likely has no intention of adding this idea. However, you can get a car housing item to place on your front lawn of your home!
I saw a comment, it said that why would i say it ruins the Wizard101 theme, if i think it does but i still want it. Well, i don't really know. I guess that because i really enjoy if there was a car mount, and it ruins the Wizard101 theme but i still want it.
I saw everyone saying i disagree, and i'm not mad, I'm just glad you all posted comments. I know i was going a little too far, the rest of my ideas i will try to make not that many details. Sorry for wasting your time :(