FAST. Just substitute Speedy for Rapid. Know they really wanted it to be Rapid, though, and laugh. Leftist bureaucrats do love their dorky acronyms that spell words, it’s a tell of sorts, much like a hyphenated surname. Don’t trust any politician, government official or organization associated with either one. If there are exceptions to this I’ve not come across them.
FAUL - Fresno Area Underground Line.