Hop in this machine, vanish from the scene
Wayne gets in his car and drives away quickly.
There are 2 possibilities as to why he may have referred to his car as a machine:
It’s a very expensive car, he wanted to refer to it as something that sounds tougher/ more expensive than just simply saying car.
He was referring to the Navy and they work with machines, so he may have just been continuing his previous reference into this line.
To help improve the meaning of these lyrics, visit "Grown Man" by Lil Wayne (Ft. Curren$y) Lyrics and leave a comment on the lyrics box