Ride.scala

case class Ride(id: Ride.ID,  
  origin: Address,  
  destination: Address,  
  pickupTime: Instant,  
  vehicle: Option[Vehicle.ID],  
  status: Ride.Status)  
  
object Ride {  
  sealed trait Status  
  case object Pending   extends Status  
  case object Assigned  extends Status  
  case object Started   extends Status  
  case object Completed extends Status  
  
  type ID = UUID  
}