Hello all
I hope this isn't inappropriate but its not really commercial given I wrote it for interest and hundreds of hours work equates to a few pounds return.
We have just released an iPhone App which calculates any vehicles dynamics using Frontal Area, Drag Coefficient, Power, Speed and weight. It also uses those characteristics and SFC to calculate fuel consumption. It uses metric or imperial units and can allow for diesel / petrol and flywheel power or power at the wheels.
Other than calculating long hand I have never found anything like this before so decided to write it for fun.
Be great to hear any feedback from budding car / bike designers or any hypermilers out there.
Cheers
Martin 
www.longshank.net
iPhone App Store - iAutomotive
iPhone App Store - iCalcMPG
iAutomotive App
