I have a tentative plan, to start with this:
strip the plastic off and shave down the raised parts, then cut out all the side pieces and all the extra stuff around the bottom. I'm thinking, narrow the front to back strips by 1/3 or 1/2.
Probably wrap the narrow pieces to keep it from breaking into bits, I have some leftover fiberglass window screen that I'll bet will do the trick. If I can find a way to glue it or otherwise affix it without destroying the styrofoam. Then some fake carbon fiber vinyl on top to give it some stiffness and an official roadie flair.
Conceptually it would look something like this, given a generous imagination.