2010 bmw z4 roadster 013
2010 bmw z4 roadster 016Enlarge Photo
The video depicts a prototype, completely unmasked, on a suspension simulator that's able to compress weeks of driving into hours of testing. That high-tech bit of kit, plus a lot of other machines, computers, simulators and highly educated people are what came together to yield the final product.
Toward the end, the roadster's new hard top is shown off and though we don't get the detail we'd like, it does reveal the general look of the car in a more candid environment than the press photos from the official reveal.