There is some basis for this. You may know, I had my eyes on a new Porsche recently. Did the research, and everything looked pretty good.
But when I took a test drive, I knew then that I did not like this car and would not be buying it. Things like that, you only know after a test drive. And if you want to consider this program a "long test drive", sobeit.
Not for me, but let's see how it plays out for GM>