Boom, a company funded by Y Combinator, is developing a supersonic passenger jet and made significant progress during their batch by securing a $100 million LOI from Richard Branson.

Overture's ticket prices will be comparable to today's business class fares, allowing for faster travel times, such as flying from Tokyo to Seattle in four hours or New York to London in about three hours and forty-five minutes.

The XB-1 is the first independently developed supersonic jet in history, and it's a prototype for a future supersonic passenger airplane that aims to make air travel faster and more accessible.

Supersonic travel will enter the market similarly to other technologies, starting at higher price points and gradually becoming more affordable, much like electric cars and smartphones.

The XB-1 was built to learn all the necessary lessons for creating a supersonic jet that is safe for passengers, using technology that can be deployed on commercial airliners.

I set a lifetime goal in my 20s to fly supersonic after seeing a Concorde in a museum, and I believe the future should include flights that are at least twice as fast as current speeds.

Eight years after their Y Combinator batch, Boom successfully built and flew a supersonic jet, demonstrating the potential of hard tech startups.

Sweden aims to fully electrify all flights by 2040, reflecting a progressive regulatory environment that supports sustainable aviation initiatives. They built a 19-seater electric plane and have a test pilot ready, showcasing significant progress in just four years.

Building a supersonic jet is incredibly challenging, but it's not impossible. It requires a unique approach and a willingness to learn from mistakes along the way.