Amazon.com Inc. just handed a Swedish trucking startup the keys to its vast freight operations. Einride AB will deploy 75 electric heavy-duty trucks into Amazon’s Relay network, marking a quiet but telling expansion of the e-commerce giant’s push to slash emissions from its middle-mile hauls. No purchase. No ownership. Einride owns the rigs, runs them with its Saga AI software, and lets independent drivers book loads through the Relay app, launched back in 2017. The trucks hit the road soon. Charging stations follow at five U.S. sites. Expect up to three million zero-emission miles annually, according to posts on X from analysts tracking the deal. TechCrunch broke the news first, citing Einride’s LinkedIn announcement. CNBC noted it’s part of Amazon’s broader diversification, alongside deals with Rivian and Mercedes for last-mile and heavy-duty EVs. Short punch. Big impact. Einride isn’t new to this.…