From Wiktionary, the free dictionary
Fanciful alteration of out, in reference to the Audi 5000 automobile.
Audi 5000 (not comparable)
- (US, slang) gone; departed from a place
2009, Hezie Samuels, Soul Sand Grains: The Cost of No Change, page 32:"That crack head was Audi 5000."
"He jet the fuck out."
2016, D. S. Brown, When Love Is Not Enough:“Alright, y'all. I'm Audi 5000. I gotta go put it down.” Leander walked out of the door.