Amtrak's high speed inspection car, the Corridor Clipper, races north through Princeton Junction. This inspection car was created from an Amfleet I coach and fitted with a dummy pantograph. When in use, a camera aimed at the pantograph films it to inspect catenary clearances. If you look closely in the photo, you can see the camera mounted to the roof of the coach. The car is seen here on the rear of a Boston bound Amtrak Regional and is passing a Trenton bound NJ Transit local.
