When the oxygen level in the air has been so reduced that we are gasping for air, and most of the conveniently accessible oil has been pumped, and we are in our last years of life, what will we tell the younger generations from whom we borrowed this planet and returned it to them in pitiful condition? That is the question.

How much we drive, and how legitimate our needs for such vehicles are questions that pale in comparison to this one supreme question. But it is really already too late.