>>>
class Car extends Vehicle with Doors, Windows, Wheels, Tires,
    Motor, Hood, Trunk, Roof, Pedals, Gas, Seats, LotsOfFun {
  // ...
}
<<<
class Car extends Vehicle
    with
        Doors,
        Windows,
        Wheels,
        Tires,
        Motor,
        Hood,
        Trunk,
        Roof,
        Pedals,
        Gas,
        Seats,
        LotsOfFun {
  // ...
}