Effectiveness of positioning depends on many factors that have an impact on the effectiveness of the work. Some of them depend on the company performing the positioning, but some depend only on Google's algorithm, whose actions and frequency of visits to the chosen website cannot be predicted.
According to business.wprost.pl, the stagnation in the truck sales market is most likely over. Companies have recorded the first increases, but the results of 2019 or other periods are still very far away.