> long as this method is inefficient, Quoting the press release: "<...> could potentially yield 90% efficiency in a magnetohydrodynamic drive, which is worth p

> long as this method is inefficient, Quoting the press release: "<...> could potentially yield 90% efficiency in a magnetohydrodynamic drive, which is worth pursuing". That's close to the efficiency of electric motor, which means the new drive will need roughly the same amount of power, as the existing ones.