Google is using Rust more and more in Android, Chromium. So its in Googles direct interest to have a better interoperability between Rust and C++. https://www.theregister.com/2024/03/31/rust_google_c/ and https://www.techradar.com/pro/google-hails-move-to-rust-for-huge-drop-in-memory-vulnerabilities are articles talking why Google likes using Rust.
Approximately 100 years once or twice, depending on how urgent it is.