The presented motor is a linear stepping motor so called Fine Stepping Piezo Actuator (FSPA) able to support large external force without losing its holding position whether powered or unpowered.
FSPA are based on inertial stepper piezo motors. They are composed of four main elements: an actuator, a lever arm, a mass and a clamp. The principle of such motors is simple and relies on stick-slip effect and dissymmetrical accelerations.
About:Energy tasked with McMurtry battery challenge
Zero reason to own an EV that has blistering performance if it can't travel more than a few miles before needing a recharge. I saw the McMurty EV run...