Ferrari is emerging from crisis and turmoil to become perhaps Mercedes' biggest threat for the 2015 Formula 1 world championship title, prompting Niki Lauda to don a red sweater to alert his team of the impending danger.
The beleaguered Italian team has been playing down its prospects amid sweeping personnel changes, but newcomer Sebastian Vettel and the SF15-T car hit the Jerez test track with immediate pace this week.
The momentum continued when Ferrari driver Kimi Raikkonen got his first turn at the wheel on Tuesday and declared it a "completely different story" compared to 2014.
He said the revolution behind closed doors at Maranello was clearly for the right reasons, "You usually know if a car is good or not, and this year is a completely different story than last year as I had a good feeling straight away when I went out."
Indeed, the Maranello outfit the most successful in Formula 1 history, is turning heads up and down pitlane.
"We are keeping an eye on the opposition," said Mercedes' Nico Rosberg, "especially Ferrari has been an eye-opener in the last couple of days. It will be an interesting year."
Red Bull's Daniel Ricciardo, the only non-Mercedes driver to win races last year, also described the test pace of the 2015 Ferrari as quick and said, "Ferrari looks good for now."
Mercedes' team chairman Niki Lauda also admitted Ferrari's apparent return to form is a "surprise".
He told the Blick: "I deliberately put on my red sweater on Tuesday to motivate our guys. Ferrari should be our main opponents in 2015."
Pirelli chief Paul Hembery, however, is not so sure and told journalists, "If anyone wants to place a bet now, they should wait a bit longer."
"It's still early. The Ferrari looks good, but I still see Mercedes as the favourite, based on what they did in 2014."