Most of the investment capital going into the autonomous vehicle sector has focused on cars. But now automated trucks and delivery vehicles are becoming more appealing amid difficulties in making cars safe enough for the public, according to several speakers at The Information’s fourth annual Autonomous Vehicles Summit.

Underscoring the shift is Aurora Innovation, which on Thursday said for the first time that it was prioritizing the development of semitrailer trucks over that of cars. “If you want to get to market with a safe system quickly, you can do no better than to start in trucking,” said Sterling Anderson, co-founder and chief product officer at Aurora, in a wide-ranging interview and Q&A with attendees. A four-year-old firm, Aurora is funded by the likes of Sequoia Capital and Greylock Partners.