Well, I find myself to be skeptical again, as I am on many Steem articles. This time I just have to say that which must be the report of people drinking coffe over the people driving cars, for this fuel to propagate to a large scale? Of course it can be (and it already is) great for the public transport, but I don't know if it will ever reach more than this, unless the world population will suffer from coffe overdose :))