The new agreement, which builds on an earlier announcement, calls for the German automaker to invest $5.8 billion in Rivian, a maker of electric vehicles.

The announcement lifts the veil on one of the largest automotive deals this year, providing more details on its goals, leadership and financial structure.

Volkswagen’s new commitment to their deal with Rivian is a hit on Wall Street. Rivian stocks jumped Wednesday afternoon after their announced an expansion of their partnership with Volkswagen. VW is investing in their attempts to build EVs in Georgia.