India's first high-speed bullet train corridor between Mumbai and Ahmedabad has achieved a significant milestone with the breakthrough of its first mountain tunnel in Palghar, Maharashtra. This 21-km tunnel is part of the larger project, which also includes an undersea tunnel. The first bullet train is anticipated to operate on the Surat-Bilimora stretch by August 15, 2027, with the entire corridor expected to be ready by that date. Fares are planned to be accessible for the middle class.