I have personal judgement against me that was obtained in FL. My question is: Is there any way to protect a car that is owned free and clear by S Corp

A corporation, whether S or C corp, is a totally separate entity from you personally.  If you personally have a judgment against you, that judgment would not typically effect the corporation's assets, barring some unique exceptions. This is not intended to be legal advice, and is general in its nature. No attorney-client relationship exists or is formed by this information. Furthermore, this does not represent the views or opinions of LexisNexis or its affiliated companies.