 
   /// Localised human-friendly string, e.g., "$10"
   let priceString: String?
+  
+  let surgeString: String?
+  let surgeImageURL: NSURL?
 
   /// Optional ETA for this option. This is the expected waiting time.
   let ETA: NSTimeInterval?

      price = nil
    }
    
    let ETA = dictionary["ETA"] as? NSTimeInterval
    
    let tripUpdateURLString = dictionary["tripUpdateURL"] as? String
    let tripUpdateURL = tripUpdateURLString != nil ? NSURL(string: tripUpdateURLString!) : nil
    
    self.init(title: title, subtitle: subtitle, bookingURL: bookingURL, bookingTitle: bookingTitle, tripUpdateURL: tripUpdateURL, imageURL: imageURL, price: price, priceString: priceString, ETA: ETA)
  }
}


  /// Expected waiting time. Negative if unknown. (For Obj-c compatibility.)
  let ETARaw: NSTimeInterval
  
  private init(title: String, subtitle: String?, bookingURL: NSURL, bookingTitle: String, tripUpdateURL: NSURL?, imageURL: NSURL?, price: TKQuickBookingPrice?, priceString: String?, surgeText: String?, surgeImageURL: NSURL?, ETA: NSTimeInterval?) {
    self.title = title
    self.subtitle = subtitle
    self.bookingURL = bookingURL
