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."