The formula racing world is rife with the offspring of long-retired F1 drivers making a name for themselves: Rosberg and Piquet are already in F1, Jacques Villeneuve has already come and gone, and the Mansell brothers are working their way up, to name just a few. But since both the Schumacher brothers have retired, Formula One has been lacking that sibling rivalry. (Mind you, with Michael having won more championships than Ralf did races, it wasn't much of a competition).