Going through divorce, please help me, any idea of value?

Sorry to hear about the tought times you are going through, just know they will pass and with time things will look better.
Just a guess but I doubt she gives a crap about the bike or the car other than what monitary gain she can get from them. Perhaps you should look at what she has or is "taking" that is her's that you may have not seen value or need in fighting over, and let her know you have as much right to half of said item(s)as she does the car and bike. maybe then a negotiation can be seen. Good luck and stay strong, your children will need your support more than ever.