I gotta say that the test drive is feelin' sexy already
Only awkward thing is that you cut off the velocity at a certain point (the sudden stop vs. natural slow-down).

And maybe you should consider offering less snapping points? Because with all those points, sure, it allows more customization, but also makes it more of a hassle, and easily goes into wacky behaviour. I'd say a simpler layout would actually give more to the design thing...(imo )

But yeah, really cool development, and it's actually taking shape now, seems like there's more substance to this demo!
As for the music, I can give it a shot What kind of music do you want?

P.