The regular production series. For the latest battery technology and the new motors, and the trick folding rear seat. Not an open single-seater (that's literally a museum piece).
Eventually, the moocoque shell battery box and drivetrain, and a prone riding position. In a monocoque 'belly tank' body.
That one would be a single-seater.
Ignore the trailing bogey axle. Add a blister over the front A-arms.