A very close and long encounter by my family in a very rural farm in wisconsin.

My mother and two brothers were at home on a ranch in wisconsin in 1967, I was 9 years old at the time. I was a very active kid and did not nap at that time of day, but this day I was inclned to nap, as well as my brother. My mother recalls the door opening and felt someone appraoch her from behind but does not recall much else, or at least will not admit remebering. My father ran a cheese factory, he normally returned home at about 5:00 PM, but this day he arrived at about 3:30 PM, I awoke a few minutes before he arrived. He ran into the house shouting come out here look at this, a space ship was hovering above a tree near our house, it was about 50-60 feet from the house and the tree was about 18 feet tall. It hovered there for a while, then it began to move ouer our vehicle and toward our driveway. The vehicle was a green briar, a first version of a blazed type vehicle. Then he asked everyone to jump into the vehicle and we followed it out to the highway, our driveway was about 1/2 mile long. When we approached the highway I could see my freind across the street and his father, they did not appear to see it. It matched our speed but was about 150 ft off the highway over a field, it seemed to disapear when we appraoched the forest, but when breaks in the forest or dips / valleys appeared on the terrain the craft had matched our speed and was still there. We followed the craft to the main highway into Wausau Wisconsin, and at that time it abruptly took a right angle turn and took off at a slight angle upward and quickly disappeared. It all seems surealistic looking back, my mom is willing to admit the event, my day is not so willing. funny thing is he was excited at the time, but did not want anyone to say anything and it seemed to be forgotten. I also recall round areas in the back yard that the grass was dark and the grass eventually died where the round spot was.