One of our readers passed this one along to me. The big takeaway point from it for me is that solar is becoming mainstream. When you’ve got companies like NIVEA using solar power for gimmicky ads like this, you know you’re getting there. And, actually, the solar ad featured in the video below may really be useful for a number of people — people who don’t want to leave the beach but really need their cell phones to be charged up. I grew up on the beach (prior to the age of cell phones) so it’s hard to imagine “needing” a cell phone on the beach, but I know that cell phone addiction has gotten pretty big….