Retain a good criminal lawyer from the Avvo list in Manhattan. I have had 30 years experience and suppression hearings are very hard to win. It all depends on the facts of the case. If you are indigent the court will appoint Legal Aid but you are better off with a private lawyer on a serious felony. Please choose "best answer" if this helped you.
IIRC, the whole "locked container in a car" line of cases is not good law anymore. ANything in a car is subject to a reduced expectation of privacy, period. California v. Acevedo.
Answers are for informational purposes, not legal advice for your specific situation. www.appealsandhabeas.com