Tesla may already be reaping the rewards of freeing up its patents.

Four days after CEO Elon Musk offered most of his company’s patents to rivals in hopes of cultivating a bigger electric car market, Nissan and BMW are ‘keen on talks” to cooperate on charging networks, the Financial Times reported on Sunday.

That pretty much validates why the Silicon Valley company freed up its patents in the first place: Tesla wants its superchargers to become the industry standard.

That way, other companies will use and enlarge Tesla’s existing network of 97 charging stations that currently dot a path across the continental United States, making it more and more feasible to swap fuel-burning cars for battery-electric ones, even for long-distance travel.