Found this in the hunt for a simple way of calculating driving force vs rolling resistance etc. via spreadsheet. It's FREE! Haven't tried it yet, I'm on the Mac right now - but will be near a Winblows computer soon.

Not quite sure if it'll do what I want to do, but it could be useful to others.

http://www.vehicle-analyser.com/

I know they say not to reply if it is, but is this spam? Im honestly not sure... has all the markings: "FREE", 3 Posts, Link...

Is it?

Um... no? Didnt think it would come off as spam, sorry.