My V6 GP0 is not driven much. With my typical long distance I drive about half an hour through the city until I then come to the highway and can drive for the first time 100. Then he starts to vibrate properly, that you hardly dare to continue driving. I then speed up to 120 and the vibrations slow down a little. In the next 5-10 minutes they disappear completely. I can then also drive 100 again and the car remains calm. It feels as if the vibrations fix the problem themselves, as if something would be centered around it. On the return journey 2 days later the problem does not occur. In the city it also drives quietly. I had already suspected the road, because it always happens in the same place. But sometimes it happens somewhere else.