Amtrak adding over 80 new trains in massive overhaul of fleet as travelers react

Amtrak is rolling out a new fleet of passenger trains this summer, replacing rail cars that in some cases have been in service for nearly 50 years.

The new trains, known as Airo, are part of an $8 billion order for 83 trains built by Siemens in California, and mark the largest fleet replacement since Amtrak was founded in 1971, according to multiple reports.

"These trains represent the next step in Amtrak's modernization of our entire fleet," Amtrak President Roger Harris said at an event introducing the fleet.