said as someone who has no children.... you only have one child, why do you both need a car that can transport them? the little'un can only go in one car at once...
put both you and missus on both cars, then whoever has the little'un takes the family car, and the other takes the zed?
put both you and missus on both cars, then whoever has the little'un takes the family car, and the other takes the zed?