Here's a list of commonly used anacronyms (alphabet soup time)
ACC = Adaptive Cruise Control
AC = Air conditioning
Regen = regenerative braking. Simply put, a way to reduce speed and sending energy back to the battery RATHER than using friction brakes to reduce the speed of the car. There are settings that increase/decrease the regen deceleration.
One pedal driving = modulating your speed (both accelerating and decelerating) only using the "gas" pedal. The trick here is understanding that the first 10-20% of "gas" pedal pressing is "braking". After that, it is "acceleration". If you have ever driven the cars at Disneyland or any amusement park, it is the same thing. Take your foot fully off the gas pedal and you start decelerating much more quickly than a "normal" car.
ICE = Internal Combustion Engine
EV = Electric Vehicle
DD = Dream Drive
SA = Studio Advisor (the person at Lucid who took your info down)
DEP, DER, GTP, GT = trim lines (Dream Edition Performance/Range, Grand Touring Performance, Grand Touring)
PPF = Paint Protection Film
There are tons more. Don't be afraid to query about them in threads, we've all been "new" to the alphabet soup at one point.