in 1985 I was coming back from california with a load to dallas tx on interstate 20 coming up out of Van Horn Texas.Got to the 173 mm and there was an old man it seemed with a motorcycle out of gas and a ways from a gas station. Pulled over to help and while i was talking to him he was looking north and I looked over his shoulder up at the mesa in front of me.The ship was what looked like aluminum in a shape that looked like two cigars put together in a pattern of a compass north south east and west. No doors no windows no seams and emaninating from the craft was a light like a flourecent light but not like any light i have ever seen.As I looked above it as it was going up and it didnt seem like it was in a big hurry like a real slow ascent.The area at this location is an area where you can see the open sky for about 30 miles in any direction but not right over the craft. Thsky all around weas black and grey and completely overcast except for right over the craft.This craft was about a 1/4 mile long and covered the mesa.The open clouds above it were enfloding around in a circle as wide as the craft the only open place in the whole sky.The clouds were enfolding to keep the hole open which i do believe I witnessed the bottom of a wormhole.The ship rose up very slowly and went through the hole in the clouds and the hole closed up in a circular fashion.This whole event took about 2 minutes maybe maybe not that long.I asked the old man if he wanted a ride to the station to get a little gas the I would bring him back and he said no he would be ok. So i Left and didnt even think about anything ubtil i got down the road about 20 miles down the road and realized that the old man never said a word during this whole event.As if I were supposed to see this event. But this is not the only one I have seen I have seen others and different kinds and been aboard one.I dont have a drawing of the one on the mesa but i can draw you one of all of the ones I have seen and draw you a picture of the propultion system I was shown if you want.Or the writing I was shown.