Let's connect some of the dots.
I suppose ultra capacitors seem to be the kind of new development in energy storage that are in the realm of science fiction. According to Chu and Obama the new solutions are no longer science fiction, so some encouragement there if they are to be believed.
Yet we also have Steven Chu who has said he believes ultra capacitors may be the way of the future ... and now we hear from Elon Musk.
Those who know for certain about ultra capacitors and or the EESU are probably either signatories to the EEStor NDA or they may be at PSU or involved in trying to replicate what DW is doing. In that regard Intel and Vinod Khosla come to mind.
As sensible and knowledgable people join those commenting that ultra capacitors are the way of the future, I suspect our confidence could grow that something at least is happening.
I know we all clutch at straws in the absence of hard evidence of either life or death, but it strikes me it is only the "believers" that get caned for that, not the "deniers".
We are all bored with the flow of indicative information supporting the possible existance of the technology. And let's face it, aside from delay, all of the information we get is (like patent flows) consistently positive.
Now all I hope for is some absolute evidence, one way or another.