human
Can Amtrak's Acela Express break the sound barrier?
assistant
No, Amtrak's Acela Express can not break the sound barrier. Amtrak's Acela Express is the fastest train in the Western Hemisphere and can reach 150 mph. A US Navy plane would need to travel 770 mph to break the sound barrier. So Amtrak's Acela Express can not break the sound barrier. So Amtrak's Acela Express can not break.