See these links:
http://electric-vehicles-cars-bikes.blo ... bills.html
Looks like you should change the title ...1) Access for plug-in electric vehicles to high occupancy vehicle (HOV) lanes regardless of the number of passengers. This legislation will take effect October 1, 2010 and last for three years.
2) A $2,000 excise motor vehicle tax credit for the purchase of a plug-in electric vehicle. Consumer’s will be able to take advantage of this incentive at the point of sale and can combine the $2,000 with an existing $7,500 federal tax credit. The tax credit applies to vehicles titled in Maryland between October 1, 2010 through July 1, 2013.