One of the smartest calls Barack Obama made on the economy was saving Detroit auto manufacturers. With a million jobs on the line, the President refused to let the American auto industry disappear.

Given the auto industry’s renewed health — GM just posted its largest profit ever — it’s hard to argue Obama made the wrong choice. But Mitt Romney continues to say we should have let GM go bankrupt. It’s practically the only issue he’s ever been consistent on.

You can expect that to be a major contrast between Obama and his opponent (Santorum opposed saving GM too). Yesterday, the DNC released a video telling Mitt Romney “don’t bet against America.” The video emphasized GM’s return to record-breaking profits, reminding everyone that saving the auto industry was a colossal success.

The fact is, nothing sells like success, and GM’s success this year is a huge victory for Obama.