Physicist by education (B.S. & M.S.) and software engineer by trade (retired), and amateur astronomer. Tesla fan since the early days.
My personalized plate, REDSHFT, is a play on the astronomical term, "redshift", for the phenomenon in which light is shifted toward the red end of the spectrum when its source is moving away from you at a high rate of speed (the visual equivalent of the audio "Doppler shift"), suggesting that that is the reason my Tesla appears red from behind.
Ultra Red 2024 Model S Plaid with white interior, REDSHFT vanity plate: My emotional-support vehicle
Red 2021 (April) Model Y LR AWD, white interior, Y WING vanity plate.