1stly, Sportstracker is one of the coolest products I've used on my E51. Absolutely brilliant!
Has Nokia thought about any specific cycling products, like

- Handlebar mount kits to fix phone in a viewable position on the bike,
- Calculation of (est) power output based on speed, weight, and slope.
- Bluetooth cadence sensor for RPM measurement.

With a decent handlebar mount I'd almost think about binning my Cateye computer. All these, coupled with HRM (for multiple phones) would turn sportstracker into a real training weapon from a cycling perspective.