Mr. Specter. What is your best estimate of the speed of the President's vehicle at that time?

Mr. O'Donnell. Well, I would think we probably were going between 15 and 20, up until that moment, and I think he probably had just begun to accelerate probably up to about 25, somewhere in that vicinity.

Mr. Specter. Had the Secret Service followup car completed its left-hand turn prior to the time the shots rang out?

Mr. O'Donnell. My recollection is they had, just about.

I don't recollect a separation of this nature. It was a slight sloping turn, as I remember, and I thought we were right together.

Mr. Specter. So that when you just indicated with your hands, you were showing a pattern of the Secret Service car having made the turn and straightened up immediately behind the Presidential vehicle proceeding down the street?

Mr. O'Donnell. That is my impression.

Mr. Specter. And was the overpass in sight at that time, did you say?

Mr. O'Donnell. Yes; it was.

Mr. Specter. On which side of the car was President Kennedy seated?