Mercedes boss Toto Wolff has ben impressed by drivers Lewis Hamilton and Valtteri Bottas
Mercedes were forced to find a new team-mate for Lewis Hamilton at short notice when Nico Rosberg retired just five days after beating the Brit to the 2016 world title.
Bottas, 27, was convinced to make the switch from Williams and signed a one-year deal in January.
And Wolff, who saw Hamilton and Rosberg's relationship sour in their three consecutive title races, is confident the fresh face has made a difference already.
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"Lewis [Hamilton]and Valtteri [Bottas] are in a great place," Wolff said.
"They have a respectful and friendly relationship from what we've seen in our team briefings so far.
"It's an exciting time for them because these new cars are a real physical challenge.
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"Both felt from testing that the G-Forces are enormous and they are embracing the new challenge of F1 2017.
"These machines are violent – just like Formula One cars should be.
"I have been out on track watching them and, next to the previous generation of cars, these are properly spectacular cars. From a fan perspective – and a part of me will always be a fan – it really is something special.
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"Any true motor sport lover simply has to see them in the flesh."
Mercedes have won three consecutive F1 World Constructors' Championships and are going for a fourth to match the period of Red Bull dominance that preceded them.
However, the sport has undergone one of the biggest shifts in several decades over the off-season as the authorities changed the rules in an effort to increase cornering speed and overtaking opportunities.
And while Wolff knows the gap has narrowed, he still appears confident in Mercedes' chances.
"We have tackled with determination the challenge of the new regulations," Wolff added.
"We have been very successful over the last three years through stable rules – but no team has ever maintained its success over such a big regulation change before.
"In a way, it's just what the doctor ordered.
"To have such a challenge is good for the team.
"There is an art to managing expectations.
"You must not set them too low – but you must also keep them under control. With new regulations, everyone starts with zero points.
"It provides opportunities as well as risks for every team on the grid."