it's funny that you are focusing on the Super Bowl's carbon footprint when it is only one game being played in one stadium. During the regular NFL season it's 15 games played in 15 different places, with all of the attendant tailgating, airline travel, and traffic jams every weekend. Some NCAA D1 college games are even worse with alumni flying in from all over the country to fill huge stadiums. That's 130 teams by the way. Media attention does not equal carbon footprint.

In my state the fuel tax is already 59 cents a gallon, and that doesn't include the sales tax. The amount of a tax is generally how much the government can get away with taking from the consumer. See the French Yellow Vest riots to figure out what the high end of that might be.