So two days ago my check engine light comes on in the Mazda (not my car pictured above). I go to AAMCO for a free scan and they tell me it is one of those emissions sensors that does't effect drive-ability. I make an appointment to go to the dealership on Friday to have it checked out further. This morning I was fortunate enough to leave early in time to to to my favorite bagel shop for a sandwich and take the back roads to work (usually take the highway). There is a particular back road that runs parallel to the bay with several sharp turns. I have a nice spirited run and as soon as I exit the last turn...the light goes off. In reality I think it had something to do with the fact that this morning it was only 25 deg and not 2 deg....or it could be something else that is totally weird but hey, light went off.