Given that it has won the Formula 1 constructors' and drivers championship for the past five seasons, you might think Mercedes would get a bit blase and over-confident - but that's not what I am seeing.
"2018 was a great year, but I feel like 2019 can be even better", he said before shaking down his new W10 Mercedes Silver Arrow.
Before the W10 headed out on track at Silverstone, Mercedes released a series of digital images of the auto they hope will carry them to a sixth successive victory in the constructors' championship.
Ex-Force India racer Esteban Ocon will act as back-up to the pair after missing out on a 2019 race seat.
Mercedes has already run its W10 on track today (Wednesday) at Silverstone for a shakedown that is being held behind closed doors. Valtteri Bottas will put the first miles on the vehicle before handing over to Hamilton, with the pair limited to just 100km under F1's strict filming regulations.
"Five double championships is far more than we would have ever expected but every season starts with zero points". The buzz really starts at the beginning of the year when you see the vehicle coming together.
A dawn-to-dusk live blog will also be available on the Sky Sports digital products for every day of winter testing, along with features, insight and reviews from Barcelona.
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Mercedes said the new auto, sporting a similar silver livery and branding to last year's model, had changed substantially under the skin. "And then you get to the shakedown and you get into the auto - it just never gets old", he added.
"We have to start from scratch, we need to prove ourselves again", said team boss Toto Wolff. "I'm really looking forward to a strong competition between the two of them, racing each other hard and fighting hard against our rivals".
"They are a threat because if you are not as smart and you didn't see how to make the most of these new regulations, then you'll certainly suffer in the coming season".
"Regulation changes are both opportunity and threat", said technical director James Allison. "There is nothing, no credit that you can take from previous seasons into a new one, and this is why we embrace every year with the same motivation and hunger as every season before".
Mercedes said changes had been made to the cooling architecture of the power unit, making it more efficient and also bringing aerodynamic benefits. However, notwithstanding this improvement, we were still not as good as some of our competitors at preserving the performance of the rear tires.
"We have worked hard on the suspension and aerodynamic characteristics to deliver a vehicle that will be much kinder to its tires - enough, we hope, to allow us to be competitive at all phases of the race and at each track on the calendar".
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