It is not eco-friendly. That glowing red-hot skin on the rocket ship - that is energy that goes into useless heat, not moving the rocket ship.
It is not so much hypersonic, as it is just HYPE. A comfortable accelleration is 0.1 G's (0.98 m/sec^2). Accellerating at that rate, it would take about 2 hours to get up to Mach 20, and about 2 hours to slow back down. Even if passengers are willing to accept 1 G acceleration, it would take 12 minutes to get up to Mach 20 speed and 12 minutes to slow back down. So the space ship would never get up to cruising speed when traveling coast-to-coast.