Elon Musk highlights that Tesla Full Self-Driving (FSD) Supervised V12 is being tested in Germany, with reports indicating the system performs safely even in poor weather conditions. While current EU regulatory burdens limit Tesla owners to basic lane-following, a potential nationwide rollout in Germany is expected to significantly impact the transportation and mobility sectors. The sentiment is highly positive regarding the technology's performance, though its expansion remains dependent on overcoming European regulatory hurdles.