Yep, but been used on the roads/street cars in Oz since the 70's when the cars were racing and people started using them as well. When you have a 1000 kilometer road race, the bigger the tank the better. And a lot of people ran them on the street as well after that and currently. (Does make setting up the suspension a little more interesting with the amount of weight as a variable.)

Mine is 110 liters by the way...