A fellow claims they can get 500km per litre. I wonder how much mileage they have put on this coffin-on-wheels? And what is the largest distance they covered at one stretch. From one photograph, it looks like they use a van to transport the coffin everywhere and then make it move a few hundred meters for demo. Without another vehicle to carry it, this 'vehicle' practically cant get anywhere.
And people get excited looking at this contraption!