Doreen's Vista Alive themes isn't exactly what I had in mind. It looks like a start though.
If the phone is to have GPS functionality then perhaps the dashboard could have a toggle to change it into "path finding" mode. Then the gauges could then do double duty, with the MPH showing "Actual" MPH, and an onboard compass could point to destination or next turn.
..and while I'm raging... might as well have the "path finding mode" scene depicting relative positioning via a street sign on the road in front of the biker.
These GPS additions would just be an ultra scaled down version of any GPS software currently on the market - but would be a much smaller footprint on the device- much less resource intensive- and arguably a bit more "fun".
Ok, now for some real raging...
Couple this with the OnBoardDiagnostics of your car and you will be able to determine when you actually need to get gas and a couple hundred other diagnostical reports. (I did it with my laptop) .... Then all the gauges on the phone could coincide with the vehicle you are in.
...now that I'm working myself into an uncontrollable rage....
might as well add yet another toggle for a VirtualEarthMobile overlay (or underlay rather) so then it gives the effect of displaying the roads ahead similar to other GPS software. Except now you have your dashboard choices on screen and it gives the funny appearance of your character driving on the map.
ahh - the imagination is an interesting thing... and I could go on all day. Might as well have the headlight switch on the bike turn on the flashlight of the phone. This is getting long and I gotta go for now..... more to come!
-Rage