
Quoting
pg1067
What were you arrested for? Why were you arrested "in a driveway of family members" as opposed to somewhere else (e.g., at the scene of the alleged crime or in your home)? Were you arrested pursuant to a warrant? If so, did the arrest warrant also include authorization to search your vehicle?
The legality of the search will depend on the answers to the question I asked, but it was very likely a valid search incident to lawful arrest. Also, you didn't indicate what, if anything, was found as the result of the search.