Things change quickly in Formula 1. It's a cliche but it's true. Just look at Red Bull: dominant multiple world champion one minute, also-ran the next.
It's no different for the various drivers on its roster: Sebastian Vettel has risen and fallen with the tide of the team this season, and now he's off to Ferrari.
Daniel Ricciardo stepped up from being a Toro Rosso 'nobody' to become Mark Webber's replacement as Red Bull's Aussie charger this year; now many are feting him as F1's next superstar.