Company Claims Throttlable Solid Fuel Rocket

A company called Digital Solid State Propulsion claims to be able to throttle a solid state rocket electronically. (See vid below).

This has a number of potential applications, such as variable blast bombs and thrusters for satellites.

To my mind, one of the applications would be for an air to air missile, where the motor would be on continuously for short/medium range flight, but for longer range, it would coast much of the way to the target.

Neat tech.