During the years that Oliver Solberg has collaborated with Johnston, he has developed into one of the rally world's greatest talents.
Together, they have, among other things, been involved in Solberg making his debut in the main class WRC.
- I want to say a big thank you to Aaron for his hard work and professionalism during the senate three years.
I wish him the best in the future, he writes.
Who will replace Johnston is not yet clear.