[jakub_g]

In the last years, no refueling stop were allowed during the race, so everyone just loaded the same amount of fuel for the race.

However, previously, there was refueling possible during the race, which allowed for some strategy variation:

- either you start with small amount of fuel, gain advantage due to lighter car (~1s faster per lap), and refuel early in the race (probably 2 refueling stops needed in such case)

- or start with bigger amount of fuel and stay longer on the track, but only do 1 stop for refueling

Also, since you needed to start the race and qualifications with same amount of fuel, going with less-fuel-and-double-refuel strategy meant you were more likely to win a pole position due to lighter car during qualifications.