Ghost Sighting Lincoln Sleaford Road

Hi i wanted to tell you about a strange experience that my wife and I experienced on the way home from Lincoln to Bourne. We had just been the the lincoln cinema, it was around midnight. We were chatting and laughing and talking. We were following another car, around 2 seconds behind them.
As we passed through a number of small viliages we had passed sleaford and was in the middle of sleaford and bourne, there were no houses or villages near by, it was really issolated.
In the headlights of the car infront of us both my wife and I spotted a figure on the far side of the road walking towards us. He got our attention becasue it was so dark and there was no sign of life or civilation in the direction in which he was heading. Also his clothes were very strange, he had on a shirt with a a long three quarter leather waiste coat on, he had a full beared, and my wife said a hat. As the others cars headlight were passing him, he seamed to take a large step or stumble in to the centre of the road. I slammed on the brakes at the same moment my wife called stop! As we passed where the figure should have been, i expected him to be hitting my car or very near. But he was right back to the side of the road again...no one could move that fast!!! Both of us were left shocked and our hearts were beating so fast, and we felt chilled.
Then when we looked up we noticed that the car infront of us never broke once. This surprised me. We were outside Rippinggale or one of the small villages near it. Has anybody else seen anything on this strech of road.