Two former SpaceX engineers have formed a startup to develop a composite, piggyback air transportation system that combines vertical takeoff drones with fixed wing aircraft for downtown-to-downtown intercity transportation. It’s all electrically powered, but can it really work?Also this week, Volkswagen has placed a massive 14 billion-dollar order with Sweden’s Northvolt that will result in a major expansion in EV cell production. The deal will involve a deeper investment from VW in Northvolt and a takeover of battery manufacturing by Volkswagen.And finally, reducing atmospheric CO2 can be approached in two ways: emit less or reduce what’s already in the atmosphere. A major oil exploration services company and a new energy tech firm have joined forces to convert CO2 into useful ammonia and do it profitably. The results could work hand-in-hand with electrification and keep the fossil fuel industry relevant without worsening climate change.Access all episodes of This Week in Engineering on Engineering TV along with all of our other series.