I took a drive today in the Fisker Karma, luxury four-door electric car that uses a gas generator to extend range. Immediate impression is very good. Car walks, rides and accelerate smoothly with the feel of a typical luxury sedan is strong like a Mercedes S-Class and BMW 7 series.
The main difference is that Karma is slung low looks more like an exotic sports car that happened to have four doors. Although clearly competing with four-door sports cars like the Porsche Panamera and Aston Martin Rapide, is more than an alternative to the large sedan in terms of performance.
The car also gave the owner a considerable amount of control over managing energy. The Switch behind the wheel, where the transmission-shifter paddles was in another car, allows the driver selects the mode of economy or performance and to adjust the rate at which the regenerative braking systems of energy feed back to the battery. If you are driving in a hilly area that You can increase the amount of energy generated while the charge down the Hill.