I'm guessing you're stationed in the Republic of Korea currently, where a persistent rumour exists that the moment an officer drinks any amount of alcohol - even if only one beer - any order they give is null and void. This is simply untrue.
blod
If the investegator is acting in his capacity as a police officer, then the repossession would be considered to be done under the color of law. It probably would not be a lawful repossession.
Negative. Only if the officer has reasonable cause to believe that the driver is or could be under the influence of a behavior changing substance.
A lawful order refers to a command or directive given by a person in authority that complies with existing laws, rules, or regulations. It must be reasonable and within the scope of the individual's authority to issue such an order.
Under the influence of what? If you mean under the influence of alcohol then the answer is no, you can't drive while drunk.
If you refuse you can risk your license being suspended or even jail time.
If you refuse you can risk your license being suspended or even jail time.
Arrest
Not usually, unless the officer has some reason to believe that you are under the influence of, or have swallowed, something else besides alcohol
Under Influence was created in 1979.
BUI is Boating under influence, compared to DUI or Driving under influence.
This means driving under the influence of alcohol and/or driving under the influence of drugs.