Nathan Blaine has filed a lawsuit against Tesla and CEO Elon Musk following a tragic 2023 crash in Idaho that killed his wife, two daughters, son-in-law, and family dog. The suit alleges that the vehicle's Autosteer feature and other safety systems failed, veering the Model X into an oncoming semi-truck. Blaine claims Tesla's marketing created a false sense of security about the technology's safety.
On September 1, 2023, Jennifer Blaine, 46, was driving a 2022 Tesla Model X on Idaho State Highway 33 near Idaho Falls, heading east with her daughters Denali, 11, and Emily, 22, as well as Emily's husband, Zachary Leavitt, 24, and the family dog, Peaches. The group was en route to join Nathan Blaine and another son for a backpacking trip after stopping in Idaho Falls. Just before 10 p.m., while navigating a gentle southward curve, the vehicle abruptly veered into the westbound lane and collided head-on with a Kenworth semi-truck hauling grain, weighing 90,000 pounds.
All four occupants and the dog died at the scene, with the Model X's front end crushed rearward. The family had purchased Tesla's Full Self-Driving package, and Autosteer—an advanced lane-keeping system under Autopilot—was reportedly engaged. The lawsuit, filed by Nathan Blaine on December 23, 2025, in federal court, accuses Tesla and Musk of intentionally misrepresenting the safety of their vehicles and driver-assist features to boost stock prices and market excitement, at the expense of public safety.
The complaint states that based on Musk's and Tesla's representations, the Blaines believed the vehicle was "safer than a human driver of conventional vehicles," leading to a false sense of security. It alleges that Autosteer and safety features like Lane Departure Warning, Lane Keeping Assist, Lane Centering Assistance, and Emergency Lane Departure Avoidance defectively failed to maintain the lane or alert the driver. Although Autopilot was not fully engaged, the suit argues that disengagement should not reduce the effectiveness of these core safety systems.
Attorney Lynn Shumway, representing the family, told The Independent: "Tesla’s done a lot of good things… but they did this inadequately. I think the technology is fantastic, but not the way Tesla is implementing it." He added that Tesla apparently did not conduct sufficient simulation work for conditions like this relatively normal road.
This case is part of a growing wave of lawsuits against Tesla following a landmark August 2025 Florida jury verdict that found the company partially liable for a fatal Autopilot crash, awarding $243 million. Since then, Tesla has settled several cases out of court, amid scrutiny over its marketing of Level 2 autonomy features like Autosteer, which require constant driver supervision despite names suggesting higher automation. Regulators, including the National Transportation Safety Board and California DMV, have criticized Tesla's branding as misleading.
A GoFundMe for the family expressed support for the truck driver involved, stating: "To the dear sweet trucker involved, we love you. We are praying for you."