Humble Robotics, a San Francisco startup building electric self-driving trucks without driver cabs, has raised $51 million.
Obvious Ventures led the round, with participation from existing investors Eclipse Ventures and Energy Impact Partners, bringing total funding to $75 million.
Gatik raised $200 million in August, Einride secured a $113 million PIPE in February, and Waabi closed $1 billion in January.
Customer pilots begin in the first quarter of 2027, using conventional trucks to collect data before Humble simulates routes and deploys its own vehicle, the Humble Hauler.
Cohen frames the trucks as a fix for an industry that struggles to recruit and retain drivers.