Rubuta ci gaba don wannan sakin layi - Christensen ya fara wasan farko a gasar tseren ƙafafun da aka buɗe a shekarar 2008 Formula BMW Turai kakar a Barcelona wanda ya goyi bayan Gasar Grand Prix ta Spain ta 2008
, inda ya shiga cikin wani mummunan hadari, ya juyar da motarsa. Ya gama kakar wasa a matsayi na shida kuma a matsayin babban rookie a cikin rookie standings.