Oklahoma City Mayor Mick Cornett and city council members last week announced a $777 million, eight-part infrastructure expansion plan called MAPS 3 (short for Metropolitan Area Projects). The proposal calls for a new downtown convention center and a rail-based streetcar system, as well as a new 70-acre central park that will link downtown with the Oklahoma River. The plan would be funded by a one-cent surcharge on the current 3.875 percent sales tax, which would remain in effect for nearly eight years. Oklahoma City residents will vote on the measure on Dec. 8. If approved, the sales tax surcharge will go into effect on April 1, 2010. For more on MAPS 3, click here.