Every drive is an outdoor event in the BMW Z4 M Roadster, thanks to its standard automatic soft-top. Just press the button and it opens and closes in just 10 seconds. With the roof down, there's no tonneau cover to disturb the aesthetic balance. With the roof up, the variable soft-top box frees up extra luggage space in the boot. The soft-top features a heated scratch-resistant mineral-glass rear windscreen as standard.