Or for door handles, if you really don't want drag, use an over-center mechanism like in a retracting pen: press in to get it to pop out, purely mechanical. Inc

Or for door handles, if you really don't want drag, use an over-center mechanism like in a retracting pen: press in to get it to pop out, purely mechanical. Include an actuator to allow automatic extension of the handles via software, but let the user mechanically actuate it as a fallback. These sorts of mechanisms aren't new, or difficult.