http://www.bbc.com/sport/0/formula1/32751118
>Mercedes F1 boss Toto Wolff said: "We discussed many topics. Refuelling was banned because of cost and because the pit stops were taking too long. But we want to re-explore it and see if we can make pit stops for fuel and tyres happen in the same time it takes to change the tyres now - two to three seconds. "We have agreed to explore this avenue and the cost involved because it could be spectacular. If it's too expensive, we won't do it."
>The FIA said a "maximum race fuel allowance" would be retained. Wolff said there had been no discussion of increasing the current allowance of 100kg. He and the FIA said the maximum fuel-flow rate of 100kg per hour would stay.
>There has been mounting criticism of the spectacle provided by F1 in recent years and the developments are a clear attempt to address that.
>Drivers have been critical that the cars are too slow - in some races they are up to 10 seconds slower than in 2004.
The FIA said this would be addressed for 2017 by "aerodynamic rules evolution, wider tyres and a reduction in car weight".
>Wolff said: "We have agreed to increase the width of the cars and tyres, and have larger front and rear wings. We want to ban the driver-aid aspect of starts, so no pre-calibrated starts and have the drivers start using hand clutches.
>"For now, it will be an evolution of the current cars. But there is an appetite for more spectacular aero kit. We want to follow this up but at the moment we will go for evolution and that gives us six months to agree on a more spectacular design."