While driving cross country, at approx 75 mph car began to sputter, hesitate felt like someone turned the thing off, briefly lost power, car regained power, event occurred three or four more times during my trip. during one of these sputtering sequences, i attempted to fill up, thinking i may have picked up some bad gasoline, car would not accept any fuel, even though gauge read just under 3/4 of a tank. continued driving until veh was under 1/4 tank, pulled off, and filled up with no problems fueling. *tr