In order to help make the Volt less financially painful both for the manufacturer and consumers, GM is lobbying Congress to pass a new batch of tax breaks for plug-in vehicles. There has been on-going debate in Congress for some time about tax credits for plug-in hybrids and GM wants to make sure that ER-EVs are specifically included. A credit of $7,000 for the purchase of such a vehicle seems to be the target point. According to GM sources cited by Automotive News (subs req'd) a $30,000 price seems unlikely unless tax credits are passed by Congress and the White House. The House of Representatives already passed a bill last week that included PHEV tax breaks but the White House has threatened a veto. More than likely, nothing will happen until early in 2009 when a new President is in office.
UPDATE: typo fixed
[Source: Automotive News - Sub. req'd]