Yes! For that matter the whole track could be a large noodle of tarmac elevated above the ground which the cars drive upon the outer surface of. On straights, drive on the underside of the noodle for reduced rolling resistance.
Now, would it be better to drive on the topside of the noodle or the bottomside? When cornering. (Poll above) I'm disallowing the innermost face because that would be the obvious choice, and I also have the support pylons there, in my head. I know which one I would choose...