Question - you had an open bottle of liquor in the car with you. Am I right is drawing the conclusion that one or both of you in the car were drinking the liquor?

Reason I ask is because black outs from drinking can mimic dissociation time loss.

the drinking can also increase a persons dissociation problems.
drinking lowers a persons inhibitions and judgement. that puts a person in situations that may not always be comfortable. when a person has dissociation problems already, landing in uncomfortable situations when drinking causes stress and anxiety which leads to dissociating.

My suggestion "if" you were part of drinking the liquor you might try going at it sober for a bit and see if that makes a difference in your dissociating. Sometimes doing this can be hard on people so I would also like to suggest attending some AA meetings or seeing a therapist. that way if you have any side effects from not drinking they can help you.

Another suggestion - After reading some of your other posts I know you have someone in your life who is a very avid drinker/alcoholic. The stress, anxiety and unpredictability of a relationship like this can also cause a dissociative to have an increase in their dissociation symptoms.you cant force the alcoholic into treatment but you can seek help for yourself so that the stress and other problems with having a relationship with an alcoholic wont be causing you to be dissociating as much.