In that picture, he has the car on "Life Support" (I remember that episode). It was a long running joke in the show, that the "Dodge" (Actually a Plymouth Duster) was a beat up death trap that was on its last leg. "Oh, Daddy, Not the Dodge!" (Kelly protesting against a trip in the car) :D
I'm not sure exactly when the Brown 1973+ Duster replaced the Red 1970-72 Duster as "The Dodge"