Some customers have secured the fuel their tractors need. Others parked the trucks as court proceedings play out. All continue to work the phones in search of more amenable solutions.

Policy wins on commercial vehicle emissions have allowed industry leaders to shift their attention to other pressing issues, American Trucking Associations President Chris Spear said.

Amazon.com CEO Andy Jassy says he expects the company’s workforce to decline in the next few years as the retail and cloud-computing giant uses artificial intelligence to handle more tasks.