I lived in Scotrun for 7 years. I80 has virtually no traffic in the middle of the night. There is plenty of time for someone to pull over and dump a bag. There is also plenty of room to pull your car over on that stretch of road.
To the person that asked if two people would be needed, they would not. You could pull off the highway into the gravel, get out of the car and throw a bag onto the side of the road with out one car passing you.
Hearing about this kind of thing up in the Pocono's is very sad. I just hope this is not some kind of wacko that will do this again. There are plenty of fights between couples that end in the death of one up there. I would hear about it a lot more as time went on.
When we first moved there, it was to get away from the noise and danger. As time went on crime and murders became more a part of everyday reports in the news.
As for the trash bags strewn on the side of the road....well it is pretty common to see that along I80. That along with mattresses, tires, etc although the trash never sat for long, so they must've found her not long after she was dumped. And remember, there is a influx every weekend of NY and NJ people for shopping, skiing, etc.
I think the State Police in Swiftwater are wonderful. We used to share a backyard with their headquarters in Swiftwater and they were always patrolling Rt 611 which runs parallel with I80. Unfortunately, the amount of woods and wildlife may make this job of finding the rest the woman a little more difficult.
Unless this guy wanted to get caught, I highly doubt he was from the surrounding area. If he was, he would know there are a lot of better places to "get rid" of a body than Rt 80. Places it would never be found.
Just my two cents for what it's worth.