Well, I don't have a Volt (yet) that I can brag & write about. But I did just buy 3 Philips Ambient LED lightbulbs from Home Depot. Here's a pic:
They're quite pricey, about $40 each. But the appeal for me is that they can be used on dimmer switches (which effectively eliminated CFLs) and used about 1/8 the amount of power of an incandescent. As you can see from the photo, the bulb lens is bright yellow. I was concerned the light would be overly yellow, but when turned on, it emits a pleasant warm white light, nearly imperceptible from incandescent lights. The other nice thing is they're instant-on, without the sometimes annoying "warm up" you get from some CFLs. The odd design made me choose "hidden" applications (a table lamp and a ceiling fixture) since it's admittedly not the most attractive product on its own. I am curious to look at my power bill next month and see if it made an appreciable difference. I installed the bulbs in fixtures we use regularly, one of which had two incandescent bulbs in it. Anyone else had any experience with these?