I'd say about a seven. I listen to a huge spectrum of music, with the only two qualifiers being that A)It's a SONG, not noise. Get a clue! and B)If it's "cool for being cool", then it's not worth my fucking time.
That doesn't sound very eco-friendly at all. Although it'd be awesome if you got a transit van, painted it in your blue/green colours and logo, and crudely welded some Batmobile-style fins to the back.