Lisat, as noted in other threads, the smart we will be getting is the North American version (for the US and Canada). There are some minor differences between those sold here and those sold in Europe. Our speedometer will be in miles per hour. All dashboard info will be in "American" increments (Fahreheit not Celsius temp readings, etc). Ours will come with side airbags as well as dashboard airbags. On Euro versions the side bags are optional. Ours will allegedly have a lower first gear for quicker take-off from a stand still, and a higher top gear to deal with our interstates. Ours also has side markers lights that meet US standards. There are other differences (such as engine availability - we have only one choice).
Odd that your sales person would recommend 89 octane fuel, as smart recommends 91 octane (premium). Hmmm...