Table: nasser_al_atiyah_car
Columns: year
class
vehicle
position
stages_won

Question: What is the average year that has a car that won 0 stages with a position of DNF?
SQL: SELECT AVG("year") FROM nasser_al_atiyah_car WHERE "class" = 'car' AND "stages_won" = '0' AND "position" = 'dnf'

Question: What is the class that that won 2 stages and has a position of DNF?
SQL: SELECT "class" FROM nasser_al_atiyah_car WHERE "stages_won" = '2' AND "position" = 'dnf'

Question: What position did the BMW vehicle made in 2006 hold?
SQL: SELECT "position" FROM nasser_al_atiyah_car WHERE "vehicle" = 'bmw' AND "year" = 2006