VW's capital to Rivian isn't guaranteed, and neither is the success of the joint venture. Major automotive tie-ups don't always result in long-term successes.

Volkswagen raised its planned investment in Rivian to $5.8 billion. But Trump administration is unlikely to bode well for EV manufacturers.

The big challenge for Rivian, the EV maker known for its innovative electric and software systems, has long been how to reach the next stage of growth. That stage came within reach in June, when the California-based company and Volkswagen announced a joint ...