Humble Robotics, a San Francisco startup building electric self-driving trucks without drivers' cabs, has raised $51 million, the company exclusively told Business Insider. The round was led by Obvious Ventures, with participation from existing investors Eclipse and Energy Impact Partners, bringing Humble's total funding to $75 million; the company declined to disclose its valuation. Founder and CEO Eyal Cohen worked on Apple's now-defunct self-driving car project, Uber's autonomous driving effort, and at self-driving trucking startup Waabi, and founded Humble last year betting that building the truck and its self-driving system together would give it an edge over rivals retrofitting vehicles originally designed for human drivers. Humble has yet to begin moving freight commercially; Cohen said customer pilots will start in the first quarter of 2027 with conventional trucks moving freight to collect data, after which the company will simulate the routes and test them in a virtual environment before deploying its own vehicle called the Humble Hauler, with commercial operations expected to begin in the third quarter of 2027. Although Humble holds a California permit to test its vehicles with a safety driver, it would need to clear additional regulatory steps before testing without a driver or deploying commercial service in the state. The company is going after regional routes, generally under 250 miles, connecting ports, warehouses, and distribution centers; according to federal data, 87% of goods shipped by truck in the US by weight traveled less than 250 miles in 202