A Citroën C 3 pulls up at a petrol station. The driver gets out of the car and before filling up with petrol opens the rear door and lets his dog out to stretch his legs. The dog, a bit stiff from the long ride, gets out of the car and starts stretching. Once the owner has finished filling up with petrol, the dog gets back into the car all relaxed and ready to continue the journey. Fewer fuel stops with Citroën's BlueHDi and Puretech engines .