I love happy music, and apparently so does my husband. Every time this commercial comes on he says, "We need to find this song!" It took quite a bit of digging today, but I finally found it - Petra Haden's acapella remake of Let Your Love Flow. She even does all of the background sounds herself.
You can download it free from Toyota's website here:
http://www.toyota.com/prius-hybrid/commercial.html
And here's a video on how the commercial was actually made (using real people). Truly amazing.
http://shalomimages.com/2009/05/the-making-of-the-prius-harmony-commercial/
