I didn't see this mentioned on this site:
2 days ago, on 9/25, Amtrak conducted high-speed tests with an Acela trainset in NJ on the NE Corridor. On the 23 mile straight stretch between Trenton & New Brunswick, as well as in Maryland - Delaware & other locations, the train hit 165 mph; in the future Amtrak hopes to upgrade sections of the NE Corridor (the former PRR 4-track main line) to regularly operate at speeds up to 160 mph. The Trenton Times had an article on the testing in Tuesday's paper; their web site is: NJ.Com.