Preseason video interviews: Daniel Ricciardo and Max Verstappen believe that both they and the team have done enough behind the scenes to mount a title challenge in 2017.
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The new regulations have created cars much faster than last season with the drivers having to strengthen their bodies to cope with the larger g-force.
Australian Ricciardo, third in 2016, said: “I’ve missed the F1 circus. Let’s do the talking on the track now.
“The car is going to feel a lot different. Both front and rear tyres are significantly wider. It will increase the speed of the cars.
“The first impression of the RB13 was it looks quite beautiful. Looks sleek.
“Personally I’ve always loved having someone I can challenge myself to. Hopefully, Max and I can really establish ourselves as two top drivers.”
Last year’s fifth-place finisher Verstappen added: “First I want to see how competitive the car is then I can be more precise in my goals.
“You start from zero again. Hopefully, we have built a very competitive car. The mood is very positive. Hopefully, the new regulations mix up the grid.
“The training is very important. Our necks and upper body especially, which have to cope with the increased forces. It will be tough.”