Nice. Before I read your song title I saw this playing in my mind as the music behind the opening titles of a movie, as a fast car with the top down rolls along PCH past Malibu and points north. As music for cinema it could stand alone. I'd love to hear what the voice is going to sound like.
PS: With vocals you're going to lose the drums, so the snare needs a lot more snap, and probably not so many hits. And you might need to back off some of the keyboards to make room for a singer.