Is fuel economy really such an issue with a Busa or bikes in general over the pond? ??? You guys should come and see our fuel prices over here in the UK, currently at their highest ever at 1.40 GBP per litre which is roughly $10.15/gallon!
I suppose if you were doing lots of thousands a year and using it as a commuting bike then MPG would be a consideration for me. But then I'd likely not choose a Busa for commuting on - nothing beats a nice lightweight bike for going around in and through the traffic. Owning a bike is purely about the enjoyment for me, a release as such, and running costs don't really come into my thinking at all.