I rented a car and a GPS from airport to Reykjavik. While driving on the highway, the GPS ran out of charge. With a distress signal, I stopped the car at road side. I realised the GPS cable was defective. No way I was able to use the GPS. I called the office of Green Motion. They were extremely unhelpful. It was a nightmare to reach the city and find my hotel. Next two days I was sitting idle with the car. I was unable to travel outside the city. The manager was not contactable. I won't give advice anybody to rent a car from Green Motion.