Transnet said it’s in talks to run additional trains between a port in Gqeberha in the Eastern Cape province and the country’s commercial hub of Gauteng to better link the two automotive manufacturing hubs.

The state freight rail and ports company has faced withering criticism from carmakers to coal and iron ore miners as its deteriorating rail service has forced an increasing amount of commodities and cars to be transported by trucks. The head of Volkswagen’s South African unit has said car companies are in talks with Transnet to improve the line and run privately-operated trains on it.