Unless the source code is available (I didn't really look, but I doubt it), no one but the maker can port it. But if smackpotato is right re: the protocol, it can be cloned. It looks to be J2ME, and I'm not sure what all would be involved in getting it working, but unless you've got a rather strong and specific desire to have it running (without porting), reimplementing looks easier. (And if you wanted GPS integration, you have to reimplement so you have the source.)

I'd buy one and mess with it if it was $30, but $80 is too spendy for all the more I ride these days.

Good luck; as I don't know or like python, and don't have one, I won't be much use. Someone around has an app they use to record their motorcycle's speed, RPM, etc, and overlay with GPS; if you can find that, it might be a starting point.