He was clocked going 50 mph on the interstate, to be exact. Sounds like he was one of those "hypermilers" ...
"He asked, 'Mr. Conrad why are you driving 50 miles an hour back there on I-95?' I said, 'I'm saving gas?' He said, 'Saving gas?' I said, 'Yeah,' and looked at my readout and said, 'I'm getting 69 miles to the gallon right now.'"

