Thrash it and the fuel light can come on far too sodding quick,,
but,, recently I have calmed down quite a lot -I have visions of someone catching my shenanigans on a dashcam and me getting into bother with the old bill- I recently did 160 miles at a reasonable, but not silly pace before the light came on.
I also know that ridden carefully 38miles is possible with flashing fuel. I was heading south a few years back and the it came on about 40 miles from the border with Luxembourg. Knowing the fuel is lot cheaper than Belguim [and not being arsed to want to stop to put 5euro in to stop again once in L), I chucked it behind a truck and did 90kmh all the way to the border.
Perhaps 200 miles might be possible with a GEN2 but the small tank is the limiting issue.