(Still catching up)
There is a shared service plaza (Angola Travel Plaza) between East and West bound traffic. You park on your respective sides of the highway and walk across an enclosed bridge to meet at a McDonald's controlled eating establishment. There are some great views through the windows on the bridge. I just happened to be walking across when a State Trooper went screaming under with his lights on. I just missed him on the other side for a head on shot, this was an afterthought and I thought the photo was blown in the preview screen. Turns out this shot works for me. This was taken with my S2IS through a finger-print-smeared window so I am pretty impressed with how it came out.
Oh yeah, we got back onto the highway shortly after this photo (like within 90 seconds) and never did see who he had gone after. We figured he was either rushing to a call off the highway or he chased someone onto an offramp.