This document summarizes and compares the patent licensing strategies of different automakers for alternative fuel vehicle technologies. Tesla's strategy is to openly license its patents to encourage adoption of electric vehicles and help create supporting infrastructure like charging stations. Toyota licenses its hydrogen fuel cell patents for a limited time to try and establish a standard, but maintains control over developing the hydrogen supply network. Ford licenses its hybrid electric vehicle patents through fees, as the technology is more mature and Ford does not need to actively grow a new market segment. The strategies differ based on each company's view of the technology maturity, need for infrastructure development, and goals for influencing industry standards.