Chris Brown suffered the ultimate vehicular humiliation Thursday ... as he tried to act super-cool in a classic whip that couldn't get off the dime.
A full crew and huge crowd gathered as Brown prepared to shoot his music video ... the singer cruising down Figueroa in L.A. in a super-sweet '60 Chevy Impala.
The engine repeatedly turned over but there was no ignition, as a clearly embarrassed Brown stoically turned the key ... with rapper Compton Menace riding shotgun.
Eventually ... the whip moved ... but oh so slowly.
Waiting for your permission to load the comments.