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.

Berlin-based Vay is best known in the U.S. for introducing remotely driven cars to rental customers in Las Vegas, viewed as a twist on the rideshare experience offered by Uber or Lyft.