The group donated rolls of toilet paper to a North Fresno park Thursday morning to show an example of just one of the needs state parks have because of budget cuts.
If Prop. 21 passes, funding would go towards park improvement projects. Cars registered in California would get into the parks with no additional entry fee.
"The return on investment is huge. Ultimately it will mean for all of us here in Fresno, higher home values, greater access to state parks and hopefully new neighbors we can share them with," said local business owner Paul Gibson.
Opponents of Proposition 21 claim lawmakers will use the higher car taxes to divert money into other government programs, and not into parks.