I have my eye on this one. It may be my second EV after the Leaf. This is part of the reason I'll be leasing the Leaf.
I got to drive the MiniE a few months ago and was very impressed with the performance. Part of my interest in EVs is the performance potential of the torque characteristics of the electric propulsion system. For my second EV, I'll be closely monitoring the sporting characteristics of each new entry in the market. I'm not going to race a car, but I really enjoy a responsive powertrain and good handling.
BMW will have the experience of the MiniE and the converted 1 Series EV they'll be piloting in 2011. They are already starting off well with the Megacity design by using a rear-drive layout and focusing on light weight. I trust BMW more than any other builder to focus on handling and responsive acceleration, even in a "city car".
As sjfotos says, combine all-new carbon fiber technology with battery cost and this thing may be seriously expensive for what it will be.