Rubuta ci gaba don wannan sakin layi - A cikin 1993 da 1994, Coulthard ya yi aiki da Williams Grand Prix Engineering team a matsayin direban gwajin su na hukuma. An sami wurin zama na tsere bayan mutuwar Ayrton Senna a 1994 San Marino Grand Prix
Ka yi haƙuri. Coulthard ya sami kiran waya daga shugaban kungiyar Frank Williams don gwada motar Williams a hanyar Jerez tsawon kwanaki hudu, wanda ya sa ya rasa tseren Formula 3000 a Pau.