This book will focus on the rights each spouse has under certain laws, situations, and circumstances, and how the division of the property will be decided by the court or through negotiation.
He didn't do anything illegal with either the car insurance or the health insurance. But he sure took a major risk since it was HIS actions that led to there being no insurance (not notifying you was stupid), the court could have held him completely responsible had you got into an accident.
As for the health insurance, that will bite him in the a$$ when it comes to settlement talks. Hold him responsible for the portion that the insurance would have paid. In other words, he has to reimburse you for the extra money that he caused you to have. While the two of you are still married, you should have been left on his insurance. Judges don't like it when people in a divorce don't play fair. And removing you from the health insurance before the divorce is final is viewed as not playing fair.