Auto Express suggests that a production version of the Rocketman could share a lot of its underpinnings with BMW's new i3 city car. Executives were quick to dismiss the notion that a Mini vehicle would be produced under BMW's "i" division, but that, "the technology we are developing for the 'i' family of cars will certainly be made available for the rest of the BMW Group." Makes sense.
Of course, normal petrol and diesel powertrains would be offered in the smallest Mini offering, peraps of the three-cylinder turbocharged variety. In any case, we still have a few years before a production Rocketman will see the light of day, so things could change drastically before then.