Fernando Alonso sent a warning to his rivals by setting the fastest lap time at Formula One's post-season test in Abu Dhabi on Tuesday.
The two-time world champion will return to the grid with the rebranded Alpine team (currently Renault) next season after two years away from the sport.
His participation in Tuesday's test was controversial as the session was originally scheduled for young drivers with experience of less than two races in F1.
Alonso, who is 39 years old and has started 311 grands prix in his career, was given special dispensation by the FIA to take part in order to get his first full day of testing in a 2020-spec car.