My husband is ignoring a court order to return my vehicle. The order says there is a hearing date of Aug. 24. Can I file complaint for contempt ??

You should file a motion to enforce, and ask for fees and costs.  I'm not sure what the hearing date is for - the same issue? The return of the car?  If it is then file something before that date and if he has not returned the vehicle, there is a chance the judge will find him to be in contempt of the previous order, or more likely that another order will be issued that is stronger, and if he fails to comply with that second order, then he will be found to be in contempt.