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Paddy Lowe: "I have worked closely with Mercedes-Benz for almost 20 years and deeply admire the company's phenomenal commitment to Formula One."

Ross Brawn: "You must always look to improve ... without damaging what you have, which is very easy to do."

On one hand, Toto Wolff claims Ross Brawn is staying with Mercedes but also confirms that Brawn may not be the "team boss"!

Nico Rosberg insists that Ross Brawn is not going to leave team

Toyota returned to endurance racing to challenge the 24 Hours of Le Mans with a prototype Hybrid, and they also have, like Honda, have the means to be an engine supplier if not a factory team, or both!

Niki Lauda and Toto Wolff do not agree with Brawn's decision

Team orders is not a new idea in any motor sports event over the ages, nor will it cease to exit.

The winter preseason test days have now been completed with Nico Rosberg topping the speed chart on the final day. Yesterday his Mercedes works teammate, Lewis Hamilton was the fastest, and today the German set the top time.

Jonathan Neale: "People are prepared to pay exotic salaries and wait 12 or 18 months, or longer in some cases."

The new engine maps are designed to optimise the exhaust solutions being developed for 2013.

The Williams team is seeking further clarification on their exhaust solution for the FW35.

Ross Bawn: It is a great opportunity for teams like Ferrari and Mercedes to integrate the work of the engine and chassis sides.

Ross Brawn: We will probably only be able to say in Australia and Malaysia.

Lewis Hamilton pointed out that the W04 lacks the downforce of his 2012 McLaren.

At this time with the current plan for new engines, the Formula One teams will run the all-new turbo V6s for the first time mere weeks ahead of the 2014 world championship.

HRT folded due to the economy worries, and now the Formula One boss wants to speak to the teams that night be in jeopardy of the same fate.

Mercedes' chief executive, Nick Fry was present at the launch of the W04 as speculation continues on when and if Mercedes will sign Paddy Lowe.