I was working the ramp on an IFR day and it was right at ILS mins: 200 and 1/2. I'm sitting at the desk and I hear over tower frequency "Ummm, tower? I don't think I'm on the runway. I'm on a road!" This guy in a bonanza somehow was shooting the ILS and saw the road that is probably a half mile short of the threshold and kind of parallels the runway and he just put it down right there! He landed fine and everybody was okay. I then proceeded out to the road in my fuel truck and filled him up because he was going to take off on the road and hop over to the airport! Luckily the FAA put a stop to it before that could happen. Which made fitting a bonanza with a 33 foot wingspan through a 28 foot gate an interesting ordeal.