Electric cars are a tough sell these days, but perhaps a little collaboration will make things easier. BMW and Tesla executives met earlier this week to discuss electric cars, Reuters reports. The meeting was held on Wednesday, but BMW declined to give any further details. In a conference call, Tesla CEO Elon Musk told Reuters that the two companies discussed how to promote electric cars, and how to make better use of Tesla’s network of “Supercharger” DC fast-charging stations. Tesla also announced this week that it would share its patents with other companies, theoretically giving rival carmakers the ability to make future models compatible with the Supercharger network. BMW and most other German and U.S. carmakers signed on with the Combined Charging Standard for DC fast charging, so it’s unclear whether the Bavarian carmaker would use both, or abandon the slow-to-develop CCS network for a full partnership with Tesla.