Mo money, mo cars! Justin Bieber is livin' the life and we can all just sit back, watch, and be jealous.

Biebs had a brand spanking new, red Lamborghini Aventador delivered on Friday -- not delivered to his house, but delivered to his Montage Resort residence in beautiful Laguna Beach, where he's maxin' and relaxin' for a few days (sans Hailey Baldwin).

Passers-by gawked; Bieber recorded video of the delivery, and all was right with the world. Of course then Justin took the 730hp whip for a test drive -- watch! ...