The chief executive of Germany’s Bosch engineering group believes that vehicles running on internal combustion engines will be needed for at least 35 years before electrification of road transport can be complete. If the entire global production of 90 million road vehicles was converted immediately, 16 years would be needed to switch over the entire fleet, Stefan Hartung said in remarks published by The Pioneer website on Sunday. Bosch is a key supplier to the automotive sector. But in reality, combustion engines would continue to be produced, which would then have to be replaced. “Double that…