We’re fans of the Tesla Roadster, the all-electric hot rod that may well change attitudes towards electric cars as well as luxury cars. And the sports car is getting an update, with a new powertrain that replaces the 2-speed gearbox with a 1-speed box for a smoother ride and faster acceleration.

It’s also more power efficient, though to what degree isn’t clear. The electric motor is also getting an upgrade, making it a capable of higher torque for better top speed and faster acceleration as well. Altogether the roadster’s getting an upgrade, though the novel battery system remains intact. And it’s free for all upcoming cars, though there’s no word if first-gen Teslas will get an upgrade kit.