SiLo wrote:As for the cars flipping, pretty sure they have a huge roll bar for that, yes it's dangerous and hassle, but much safer than what we have seen recently with Sainz where you go head on into a barrier and can't get.
FWIW, Roll hoops aren't that effective in gravel. Too small a surface area, and they'll just sink in until they get to something with a larger surface area (the drivers head). Sure they may work most of the time, but it would be very possible for there to be a major injury with a driver rolling in the gravel.
The trouble with using slippery surfaces on the apex is that it wouldn't really discourage the drivers. Ironically, the more you shortcut the apex, the less grip you actually need to maintain the same speed - so it wouldn't work in spots where drivers shortcut the track on the inside of a corner (chicanes, Radillion, etc). The same logic doesn't hold true at corner entry and exit however, and the "astroturf" strips there would be effective (provided they were adequately low grip).
That said, it should be possible to implement some sort of electronic triggering system to catch violators, and then stipulate that they take a drive-through penalty for any violations. If nothing else, it seems running an antenna wire 1/2 a car width off the track limits (plus some extra allowance for accuracy), and then linking that to the car's transponder (which could be stipulated by rule to be on the centerline of the car) would work quite easily. As mentioned before, the wire wouldn't even have to circumnavigate the entire track - just the trouble spots would be enough.