title: have multiple users belong to one record in rails 5 app
body: <p>I am building out a rails 5 ruby 2.4.0 app. </p>
  
  <p>I have a Truck model, and a User model. </p>
  
  <p>I would like to reference several users to the truck.. the person who created the truck, the owner of the truck and the driver of the truck if it differs from that of the owner. I want it to reference only the user because I don't want to have may types of user models. </p>
  
  <p>Is this theoretically possible? </p>
  
  <p>im thinking about this:</p>
  
  <p>Truck has_many_users</p>
  
  <p>user belongs_to truck (not sure how to work this?)</p>
  
  <p>when a truck is created it logs the current user id, then the user can select system users for the driver association and owner association... </p>
  
  <p>Please help i'm burning my brain trying to map this out.. </p>