Updates with stop at GM plant, Obama driving Volt in 19th paragraph.

July 30 Bloomberg -- President Barack Obama, in the heart of the U.S. auto industry, told a crowd of workers that the government bailouts of General Motors Co. and Chrysler Group LLC are giving taxpayers a return on their investment.

Heading into a congressional election season in which polls show the public skeptical about the $84.8 billion rescue and anxious about economy, Obama is using the backdrop of Detroit- area plants owned by GM and Chrysler to promote what he says is an industry revival that has saved more than a million jobs.

â??The fact that weâ??re standing in this magnificent factory today is a testament to the decisions we made,â?? Obama said at a Chrysler factory that recently added a second shift of workers to build the Jeep Grand Cherokee.