Seriously. It's practically a crime how the i3 Rex is purposefully made far less practical and with far less utility just in order to maximize its "value" for CARB credits for BMW. (Unadjustable, too-low battery buffer set point, and laughably small gas tank)
http://insideevs.com/bmw-i3-rex-bevx-restrictions-plea-carb-unleash-rex/