Rails has_and_belongs_to_many fixture

car.rb
class car
    has_and_belongs_to_many :owners
    ...
end

owner.rb
class owner
    has_and_belongs_to_many :cars
    ...
end

owners.yml
me:
    cars: swift_sport, s2000

not_me:
    cars: swift_sport

cars.yml
s2000:
    owners: leoo

swift_sport
    owners: me, not_me