I am considering a SMART for the fuel savings, I have test drove a few. I have a few questions that will help in my buying decision. I am looking for a diesel only.Is the smell of diesel in the cab a common thing, it was a cabrio?Two of the ads I phoned the cars had replaced engines, both Diesels with under 80,000 km. Is engine life a concern?Does anyone know when the Diesel engine is wore out?Is their any changes from 2005 to 2006?How does strong winds affect them? I live in Calgary which can have windy days.One of the cars had a plug-in where the cord attached through the front bumper. Is this the pan heater or other?How are they to start when sitting outside on cold winter days?If anyone from Calgary reads this, is there quality Calgary service other than Mercedes?I am sure I will think of more but that is all for now.Thanks, Ken