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Self-driving truck companies Aurora Innovation and Kodiak AI received a federal exemption this week that removes a massive barrier to commercialization.

But if a mechanical problem forces a self-driving truck to pull over, there’s no human driver to deploy those warning devices.

The round included funding from dealers (Friedkin Group and Findlay Automotive), Toyota’s venture arm, Y Combinator, and First Round Capital.

The self-driving trucks startup is hauling refrigerated and dry freight for consumer packaged goods and for food and beverage customers.