In announcing the plans last week, Mobileye Chairman Amnon Shashua said partnering with Delphi — separately from automakers — will speed the industry’s move to the technology “without the need for huge capital investments.” The industry is moving toward safety systems that eventually will enable vehicles to autonomously negotiate an entire trip door to door. But some observers remain skeptical that the complex technology will be ready soon, or that ordinary motorists will have access to it. “I don’t think anyone will sell Level 4 vehicles to consumers in 2020 or 2021,” said Sam Abuelsamid, an analyst with Navigant Research, “With the possible exception of Tesla, every manufacturer will want to keep very tight control of their vehicles to make sure they work and are maintained properly.”