Filling up with petrol – a robot's job

I’m sure that many readers will remember the days when petrol stations had attendants that put the petrol into the tank for you – before the days when “self service” became the modern way of filling up.
Well, perhaps we are going to return to that kind of service. I’ve been fascinated today by a video of a petrol station in the Netherlands, that uses a robot arm to fill up the cars.
The robot knows from the type of car how to open the petrol cap, and presumably whether or not to put diesel in. I wonder how it copes with bio-ethanol?
It looked rather slow at the moment, so I guess the queues at the petrol station near here would just get longer. I also didn’t see anywhere to pay for the petrol – does the robot arm swipe your credit card as well?
As fascinating as it is, I’m still not too sure what to make of it all. It may be nice not to have to get out of your car, but it doesn’t help the unemployment figures!