Here is the crazy thing... the BMW 330e with options costs $62,345, so you don't have to wait at all, just buy a Model S for $66,000!!!
And now this....from Car and Driver: "With gentle accelerator pressure, the iPerformance will motor up to a top speed of 75 mph for a maximum of 14 miles, according to BMW, assuming the battery was fully charged at the start. When the driver inevitably grows weary of turtle mode, pressing deeper on the accelerator pedal—say, to execute a safe pass—automatically fires up the turbo four-cylinder."