buses running the Gwinnett County Transit local routes run on 100 percent CNG. Additionally, about half of the Georgia Regional Transportation Authority express fleet, which runs and refuels out of the Gwinnett County Transit facility, uses CNG. The Massachusetts Bay Transportation Authority was running 360 CNG buses as early as in 2007, and is the largest user in the state. The Metropolitan Transportation Authority (MTA) of New York City currently has over 900 buses powered by compressed natural gas, with CNG bus depots located in Brooklyn, The Bronx, and Queens. The Nassau Inter-County Express (or NICE Bus, formerly New York MTA Long Island Bus) runs a 100% Orion CNG-fueled bus fleet for fixed-route service, consisting of 360 buses for service in Nassau County, parts of Queens, New York, and the western sections of Suffolk County. The City of Harrisburg, Arkansas has switched some of the city's vehicles to compressed natural gas in an effort to save money on fuel costs. Trucks used by the city's street and water, sewer, and gas departments have been converted from petrol to CNG. Personal use of CNG is currently a small niche market, though with current tax incentives and a growing number of public fueling stations available, it is experiencing unprecedented growth. The state of Utah offers a subsidised statewide network of CNG filling stations at a rate of $1.57/gge, while petrol is above $4.00/gal. Elsewhere in the nation, retail prices average around $2.50/gge, with home refueling units compressing gas from residential gas lines for under $1/gge. Other than aftermarket conversions, and government used vehicle auctions, the only currently produced CNG vehicle in the United States is the Honda Civic GX sedan, which is made in limited numbers and available only in states with retail fueling outlets. An initiative, known as Pickens Plan, calls for the expansion of the use of CNG as a standard fuel for heavy vehicles has been recently started by oilman and entrepreneur T. Boone Pickens. California voters defeated Proposition 10 in the 2008 General Election by a significant (59.8 percent to 40.2 percent) margin. Proposition 10 was a $5 billion bond measure that, among other things, would have given rebates to state residents that purchase CNG vehicles. On February 21, 2013, T. Boone Pickens and New York Mayor, Michael Bloomberg unveiled a CNG powered mobile pizzeria. The company, Neapolitan Express uses alternative energy to run the truck as well