In the round-up:
Nico Hulkenberg says several F1 drivers were considering an appearance in next year’s Le Mans 24 Hours before a date change on the 2016 F1 calendar means the European Grand Prix now clashes with it. Links
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Hulkenberg: 'Big appetite' for F1 drivers to do Le Mans (F1i)
"I think there was a big appetite and interest from many drivers to go and get a little teaser from endurance racing and Le Mans in particular."
Vettel excited but wary of racing outside F1 (ESPN)
"You need to be careful because I think especially with DTM the level of competition is very high, it's not that easy to look good."
AER and Ilmor respond to FIA call for budget F1 engine supplier (Adam Cooper's F1 Blog)
"Advanced Engine Research has joined Ilmor Engineering in responding to the FIA’s call for expressions of interest for an alternative F1 powerplant for 2017."
Cosworth rules out applying for F1 engine tender (Motorsport)
"The economics of it just don't work out. It would cost roughly £20m to develop from scratch, with everything else that goes with it."
Pirelli say they can make F1 cars much faster Pirelli can find F1 four seconds (Autosport)
"If you then gave us a proper testing programme, probably by the tyres alone, and with a natural evolution of the current car, we can deliver four seconds, and (the teams) won't need to do much else."
Hamilton: Ferrari 'very, very close' to Mercedes (Crash)
"I think they took their last step in Austin and they are very, very close"
How has Nico Rosberg gained the upper hand on Lewis Hamilton? (Sky)
"If the set up window through which the car works has now been narrowed, has it made getting that set up sweet spot exactly right more crucial?"
Giovanna Amati: The remarkable story of F1's last female driver (BBC)
"Held hostage in a wooden cage for over 70 days, Amati was eventually released, reportedly after her father used box office receipts from the first Star Wars film to help meet the kidnappers' demand of almost $1 million."
On this day in F1
Happy birthday to six-times F1 race winner Jacques Laffite who is 72 today.