I had heard of Zen Car before. A system with which you can rent electric cars in Brussels. I had also looked at the prices before. It seemed a bit too expensive, with a registration of 40 euro and between 5 and 9 euro per hour - with the added inconvience that you can only really go 100 km with the machine. Still, I thought it was a nice initiative and in March some people told me there's a special 3 euro deal where you get to try the system for 3 months, including over 100 or so euro credit.