Those in favor of the plan say it would generate as much as $900 million for the state, depending on oil prices.
Taxpayer advocates say they'll fight. They say California already has the second highest gas tax in the country and pushing another one would be a huge burden on people struggling to pay their bills.
MORE: California voters reject Prop 6, the effort to repeal state's 2017 gas tax
Prop 6, effort to repeal 2017 CA gas tax, fails in midterm election