The 4-door saloon was shown in two versions: compact executive (B99) and grand tourer (B99 GT).

[2] The B99 was a 4,500 mm (177.2 in) long 4-door saloon with 4 seats constructed of aluminium panels[3] and featured suicide doors.

The power train was also developed by Bertone as a hybrid; featuring a 1.4 L engine for range extension purposes with two electric motors of 201 bhp (150 kW; 204 PS) each driving the rear wheels.

The car's maximum output of engine and electric motors is 570 bhp (425 kW; 578 PS).

The GT added an additional two electric motors giving it a four-wheel drive and a total power output of 972 bhp (725 kW; 985 PS).