The juxtaposition of toddlers and the "DARPA" logo is not jarring, given the benefits DARPA has produced for humanity due in part to its unleashed creativity, but certainly 'weird' given the context of its mission statement.

In the video it looks lik the htv is controlled by two flaps on the bottom. Even if this program is in fact finished the research will be useful at some point when rockets are cheaper. A 12 minute flight coast to coast would be nice.

Great talk, thanks for the link.