Another fee adopted in the closing days of the Oklahoma Legislature's regular session this year has been ruled unconstitutional.

The Oklahoma Supreme Court ruled a fee that would have been charged to drivers of electric and hybrid vehicles is an unconstitutional tax, mirroring an earlier ruling on the cigarette fee.

Unlike the $215 million in revenue expected from the cigarette fee, this ruling won't take such a large chunk out of the budget. If it were allowed to stand, the fee would have brought in about half a million dollars this budget year and about $1 million next year, according to a legislative analysis.

Revenue from the fee was expected to rise as more drivers switch from gas tanks to batteries.