As first reported by the Milwaukee Business Journal, AT&T began their campaign of being more fuel efficient by unveiling 42 compressed natural gas (CNG) vehicles. The annoucement was made at Discovery World in Milwaukee yesterday.

In March 2009, AT&T announced their plan to invest up to $565 million as part of a long-term strategy to deploy more than 15,000 alternative-fuel vehicles over the next 10 years. AT&T expects to spend an estimated $350 million to purchase about 8,000 CNG vehicles and approximately $215 million to begin replacing its passenger cars with alternative-fuel models.

“This deployment was made possible because of the work of We Energies and area communities to establish about a dozen CNG fueling stations in southeast Wisconsin, as well as strong support from state environmental leaders like Rep. Jon Richards who are encouraging the use of alternative fuel vehicles,” Scott VanderSanden, president of AT&T Wisconsin, said in the release.

AT&T’s investment represents the largest U.S. corporate commitment to CNG vehicles to date.