Williams has taken the wraps off its first Mercedes-engined Formula 1 car.
The Grove-based squad unveiled the FW36 at Jerez as it began testing in Spain for F1's new 1.6-litre turbo machinery.
Valtteri Bottas was the man in charge of driving the car for the first time, just one hour ahead of the end of the first day of testing.
The front of the car, one of the main areas of discussion so far, features a finger-style nose like some of its rivals.
Williams has switched from Renault to Mercedes power this season as it attempts to revive its fortunes after a disappointing 2013.
The squad, which has 16 constructors' and drivers' titles to its name, finished ninth with just five points.
The FW36 is also the first Williams produced under the chief technical stewardship of Pat Symonds.
Long-time Ferrari racer Felipe Massa joins the squad, replacing Lotus-bound Pastor Maldonado alongside sophomore driver Bottas.
Bottas is scheduled to drive the car for the first two days of Jerez testing, with Massa expected to take over on Thursday and Friday.