At the bottom of the order page, it says "Additionally, an over-the-air firmware upgrade to the power electronics will improve P85D performance at high speed above what anyone outside Tesla has experienced to date." This sentence is separate from the sentence talking about the upgrade to enable 155mph top speed. So what does it mean? What does "power electronics", "performance", and "high speed" mean? Theories: - longer sustained high kW output? - faster acceleration at highway speeds? faster quarter mile? Probably not anything related to "handling" (torque vectoring, suspension, steering, etc.,)?