At this moment, FSD stands for Full Self Driving, a label made popular by Tesla which deliver this software option on their vehicles. It makes it so most Teslas can drive automatically from A to B without any interference from the driver, who becomes more of a supervisor at this moment, because human laws still require this. After all, you cannot blame a car for the accident when it happens, we need a driver for that still.
But how long will this be the case? With the same of similar software as its basis, optimus is Tesla's humanoid robot, which is already performing more and more tasks in the Tesla factory testgrounds. My estimate for a fully sentient device, as the acrosstic above states? Seventeen years, tops! Might even just be 7 instead!!