First and foremost: it's very quiet, and therefor disconcerting. It appears slow because I don't hear the engine or any gear: «single fixed gear ratio». It felt a bit "spongy". But boy is it fast: 0-60 in a blink! Of course, it's the European version, and I had to translate "60Km/h." is "only" 37 mph...!
But otherwise it's like any smart, nothing different... except the pods: total and instant +/- charge (regenerating braking and/or downhill).
I noticed the "engine bay" radiator/fan: «water cooled battery and motor». The car's management is totally iPhone integrated with the appropriate app. «Pre heating and cooling possible» (extreme climate: take note).
Evident shortcoming, the range: only «83 miles or 4-5 hours of travel at typical city speeds». This will most likely be a city car, a second or commuter's car (fleet?). Can be charged overnight on household 110V, or faster on 220V.
At first it's only available on a closed lease with a $2,500 down payment, $599/month, 4 years/40,000 mile contract, the whole duration is under warranty.
Thanks again to scTysons and Wallace ('wrumbarger') for the test drive. They already have an order in, for a distinctive client.