public Order(Type deliv, string startP, string finishP, int vol)
{
_startPoint = startP;
_finishPoint = finishP;
_type = deliv;
_track = Best(startP, finishP, deliv, vol);
_cost = _track.Cost;
_volume = vol;
}
public Order()
{
_cost = new double();
_volume = new int();
_startPoint = "";
_finishPoint = "";
_track = new Track();
_type = Type.Economy;
}