'It has not been seen on any other car' - New Alfa Romeo has a 'revolutionary' front wing

Sauber's Alfa Romeo-branded new car for 2019 turned heads when it hit the Fiorano circuit for a shakedown on Thursday.

On display was not only the striking camouflage livery, but a front wing design that many are calling "revolutionary".

'High evolution'

"It has not been seen on any other car," said Tobias Gruner, a writer for Germany's authoritative Auto Motor und Sport.

READ: Alfa Romeo to reveal innovative 2019 F1 car - report

It remains to be seen if other teams follow Alfa's lead by the time the Barcelona tests start next week, but Italian driver Antonio Giovinazzi is confident.

"We had a very high evolution in the last races of last season, so we are hoping to start from there," he told Sky Italia.

Also attracting attention this week is McLaren's newly-unveiled 2019 car, with new team driver Carlos Sainz saying those at the factory at Woking have been working "extremely hard".

"It seems that McLaren has taken a leap of a couple of years in just one," said Marco Canseco, correspondent for the Spanish newspaper Marca.

Sainz, though, is cautious.

"It would be a mistake to set goals at this point. We started the car for the first time a week ago and we are going step by step," he added.