Earlier quoted context omitted.
Washington state decided to have light rail. But instead of using off-the-shelf rail cars, they just had to have them "custom designed" for the Pacific Northwest. Nobody was ever able to identify what about the PNW needed custom rail cars, but they sure cost a lot!
The only light rail operating in Washington State is LINK Light Rail, which Sound Transit operates using Siemens Mobility’s S700 model (although some older train sets are still used on the same tracks). Looking at the Wikipedia page for the S700, you can find these trains all over the US, including California, Arizona, Georgia, North Carolina, Minnesota, Oregon, Texas, and Virginia. They seem to be popular in Europe,…
Before it was built is when they said they would be custom cars.