An impressive support.

Despite the weight of the support, avoid the starts on a flying or sporty driving. Indeed when sports started, the GPS will be ejected! it is the same during sharp turns.
So avoid trying to compete with Fangio! or Alesi ...

On a steep hill, the -GPS media tends to slide forward.

On a long journey, the carrier moves slightly (vibrations of the road).
I tested the support over a period of several hours away, including the motorway, the national road, the main road of the city, the poor state of roads, all on a journey of 1300kms, which more than 800 in one go.

Despite these annoyances, I do not regret my purchase. So I can advise, as people have become aware of them.