Barack Obama 2012 Campaign Launch Video - "It Begins With Us"

President Obama issued a re-election video in which he does not appear.
Seems like an interesting strategy. It doesn't address any of the current issues facing our society. Instead, it depicts constituents from all parts of the country and of varying racial groups. The ad doesn't talk policy at all, just features individuals from businessman, to college student to a single mom all talking about how the election in is "in our hands" and "we have to make it happen." It's not meant to be in informative or smear potential opponents, it's just a tame re-election campaign video that only boasts it's real purpose at the very end with the iconic Obama logo.
It makes me wonder how hard Obama is really going to have to work as an incumbent President? This message of the campaign being in the hands of the people kind of makes it sound as though he will be too busy to be on the campaign trail again himself. It's a reasonable assumption given that it is currently his job, but was it a good idea to advertise that fact so early on? Republicans might take this as a sign of arrogance on Obama's part, perhaps even suggest that he's "out of touch" with the people.
I wonder how this will play out in the coming months as the field of Republican challengers continues to emerge? Will Obama really be able to leave it in the hands of the people, or will the field of competition lure him into a cross-country campaign?