Your idea won't bring gas prices down:
http://www.snopes.com/inboxer/petition/gasout.htmBut there are better reasons not to go to Exxon/Mobil:
ExxonMobil tries to convince the public that global warming isn't happening even though ExxonMobil is one of its main causes. It spends millions of dollars on misleading propaganda every year.
ExxonMobil has played a leading role in sabotaging international attempts to stop global warming. It would rather sell more petrol than protect future generations.
ExxonMobil doesn't believe renewable energy has a future. "With no readily available economic alternatives on the horizon, fossil fuels will continue to supply most of the world's energy needs for the foreseeable future." --Lee Raymond, ExxonMobil CEO, 1997
ExxonMobil is the biggest oil company in the world - its profits totalled more than US$12 billion in 2000. If anyone can afford to help stop global warming it's ExxonMobil.
ExxonMobil was one of the main financial contributors to George Bush's election campaign. As soon as George Bush became president, he announced that the US would pull out of international agreements to stop global warming - exactly the position that ExxonMobil was promoting...http://www.dontbuyexxonmobil.org/background?text_id=whyeom