It's a term used by Uffie in her song, Pop the Glock. It means one can drive with his gang/or
people. Usually, the people are just known as a
car not to be messed with...maybe they are part of a gang or they have drugs or they
will just kick someone's butt in general.
"Me and He are crusalicious, better watch out our clan gets vicious."
or, for a non-lyric example,
"
Girl,
don't go by that red
car. They be crusalicious."