I see pictures of Raven's FEH, and it has a solar panel on top. I'm curious to know in what ways it supplements the battery pack? Does it keep the charge longer, allowing you to ride longer in electric? If so, how do you avoid the heating/cooling issue (the ICE would still come on)? Does it allow you to "floor it" more before ICE kicks on? What does it actually do?

I've invited Raven to comment, but thought it was worth a public thread. Anybody else have comments?