Remember the 55 mph speed limit? Remember… ignoring it? Wired’s Autopia blog is wondering if we should consider bringing it back. Back in 1974 Congress passed the National Maximum Speed Law, and threatened to cut funding to any state that didn’t comply with the new 55 mph maximum speed limit. Theoretically, forcing everyone to drive slower increases fuel economy, and the oil embargo had people stressed. But did the lower speed limit work? Did we save gas?