Approx 1975 my husband, sister, a friend and I saw a very clearly a space ship. It was not technically a UFO. Everyone could identify it as a space craft of alien origin. It was no more than 100 yards away. So the view was very clear. We were all sober. Prior to seeing it up close, it followed us keeping up with our speed. At the time we had an 8 track tape disk. Prior to the Space craft the tape worked perfectly, as it always had. However, when we noticed the craft the tape began to skip at times and then speed up. We stopped the car at a look out point at High Cliff, in Sherwood, WI. We heard a whizzing noise. I looked to my right, and I remember this perfectly, four white beams from under the craft illuminated the grassy ground. They were very bright. We all looked and inside sitting at what I assume was the control panel were two alien creatures, green in skin color, over sized almond shaped heads. Their eyes were also almond shaped and quite large. It hovered seamlessly about 6 -10 feet from the ground. I was mesmerized . However the other three passengers were freaking out big time. My sister kept chanting out loud..."Go away! Go Away!" It stayed mid air for 5 minutes. Then carried straight up and away. We left the area with the craft following us (tape deck malfunctioning the entire time) again keeping up with our speed of 55 mph. It never went ahead or behind us. It kept level with our car. Right before we got into town the craft disappeared. It was very exciting. I have seen several other crafts but never again this close.