They missed the boat in terms of how could you possibly explain to someone who is casually interested in F1 or who wasn't into cars in the first place - how do you explain to them how the engines work and if you get to that point what, for example, makes the MB better than the Renault? Fuel economy is good appears to be as much as they can manage - and yeah it is but so is a V8 revving to 20,000rpm and ripping your head off every time it goes past.
I don't reckon the races last year were good because of the engines.