From video description:

“Stargazer is Earth’s first hypersonic, reusable aircraft. No one has ever built an engine that makes one-hour global transport cost-effective. Until now.

Stargazer will take off from a primary airport with jet engines, then when away from city-center, our rocket engine will propel passengers gently to 170,000 feet and Mach 9, crossing 5000 miles in 1 hour. San Francisco to Japan. Houston To London. All with a 2-hour turn-around.”

https://www.venusaero.com/
https://www.youtube.com/watch?v=WVmN4mHtASM