 The additives satisfy the U.S. government's demand that the alcohol is unfit for human consumption and add visible color in case of fire.However, 2010 São Paulo Indy 300, held in Brazil –outside of the U.S. regulations– utilized a full E100 mixture, the first instance in the sport.To compensate for the loss of power due to the use of ethanol, the displacement was increased back to 3.5 liters.