has been a
Who is driving? Oh my God, bear is driving! How can that be?
It is also these bear drivers that are causing the alleged "greenhouse effect", not us. If you value Earth, and your face (remember, if bears can drive, they can come to your house and do unspeakable things to you), bears must not be allowed to drive.
Often when ambiguity arises about who is driving the car, bears will seize the opportunity and surprise you by driving and perhaps even having been driving for hours. So remember to keep an eye on your driver at all times and remind yourself that he IS driving.