Everyone's CAT 5 material at some point. A race isn't a time trial nor are aero bars allowed. Speed, by itself, gets you nowhere. Can you make multiple rapid accelerations? Can you go deep in the hole when the pace picks up and recover? Are you smart enough to know when to cover a break and when to let it go? Can you conserve your energy 'til the right moment?

You'll just never know until you go out and give it a try.