Can I get in trouble for being in a vehicle that was taken away due to unauthorized use of motor vehicle?

Probably not, but call the police to explain.

What are the penalties for first time eluding from officer in a vehicle?

If there is no evidence there will be no penalty.

Can I effectively challenge wife's separate property claim?

You should consult a family law attorney to discuss this matter - it is complex.

How to serve someone in an administrative process?

Send it by mail and have proof of service completed by a non-party over the age of 18.

Yes, they can hold it without a warrant so evidence is not erased.

I think you need your own criminal defense attorney to deal with this.

I have been locked out of my business?

You should hire a business litigation attorney. Did the business have an operating agreement?

Can the officer nys bring a breathelizer test back up if he gave me a speeding ticket?

Hire a ticket attorney to deal with this - so you don't get points.

If a 16 year old juvenile runs away before being convicted of a misdemeanor, will the warrant or bench warrant go away?

No the warrant will not just go away. You should hire an attorney to address this. The longer you wait the worse it will be.

Can I take and hold my son's drivers license?

He can get a replacement license if you took his license.