they have the same sensors on Indy cars...with a half lap to go when they realized he would not run out of fuel they told him to go full throttle...
That’s pretty neat - I wonder at what point in the race they start realistically thinking their guy can go all the way without risking that last pit stop. And that’s not to take anything away from Rossi’s driving, which I imagine had to be impeccable in order to put him in a position to win in that fashion.