The following is the part of Christopher's post that I was referring to:
"Comment by Christopher Erckert on September 20, 2008 at 1:35pm
Almost nervous. I reserved on August 12, 2008, I configured on August 25, 2008 for an 09 Cabriolet and I have a EDD of 10/12/2008 to 1/10/2009. "
There is not a six month wait here between reserving and configuring.
The smart has no real-time mileage display / trip computer either standard or as an option. I reset the trip odometer each time I fill up and write it on the reciept after that the MPG or the Miles per Dollar is easy to calculate. There is a full blown computer available aftermarket for the 450 in europe and I would guess it won't be long before it is available here.