BMW has released a short video documentary on the i3 from planning through to production.
From first imagining the concept, to hitting the wind tunnel, and then integrating it into the BMW brand portfolio - it is all covered in the film. There is also some more subtle nuances covered that we don't generally associate with a new EV being launched - like "interior sound" design.
At just under 4 minutes in length, and as professional a piece as we have come to expect from BMW, it is definitely worth a watch.
Hat tip to Michael B!