&quot;Platooning&quot; [1] could decrease air resistance quite a bit and that wouldn&#x27;t even require a fully autonomous car.<p>[1] <a href="https:&#x2F;&#x2F;www.theguardian.com&#x2F;technology&#x2F;2016&#x2F;apr&#x2F;07&#x2F;convoy-self-driving-trucks-completes-first-european-cross-border-trip" rel="nofollow">https:&#x2F;&#x2F;www.theguardian.com&#x2F;technology&#x2F;2016&#x2F;apr&#x2F;07&#x2F;convoy-se...</a>