Vehicle licensing fees in Washington State could spike dramatically, all in the name of global warming. Six Seattle Democrats in the state Senate are trying to push through a bill that would require the Department of Licensing to collect a greenhouse gas tax. Sponsors say the tax in Senate Bill 6923 is an effective way to fight global warming by giving the state more money to fund transportation alternatives. If it passes, there will be an extra tax on your yearly license tab fees, based on EPA estimated miles per gallon your vehicle gets. The bill states vehicles getting below 15 miles per gallon will be charged between $200 and $240 extra every year. Vehicles that get between 15 and 25 miles per gallon, will pay $100 to $180 dollars extra every year. Vehicles getting over 26 miles per gallon, will pay between $40 and $100 extra every year. Vehicles that don’t have an estimated fuel economy rating will be charged a fee based on engine size.