"So even if we left these critical industries untouched, we could still reduce fossil fuel consumption by 83%" I think these industries are not the most challe

"So even if we left these critical industries untouched, we could still reduce fossil fuel consumption by 83%" I think these industries are not the most challenging ones about finding carbon-free alternative solutions. One of the most important thing is transportation, and as far as I know, there isn't anything immediately available that can replace the current shipping of goods around the planet. In the future, we may try switch to ships burning iron powder instead, or build massive continent-connecting rail infrastructure (like in Snowpiercer), but for now we'll just have to settle for less than 83% reduction.