Floyd Mayweather -- Brings $12 MILLION Car Fleet ... To L.A. Hot Spot (VIDEO)

Floyd Mayweather led a PARADE OF SUPERCARS out in L.A. Thursday night -- rolling out more than $12 MILLION in fancy automobiles ... and TMZ Sports has the footage.   The boxer hit up Le Jardin with 5 cars in his entourage.  1st Car --…