Obrist, the Austrian engineering firm that spent more than a decade trying to sell a gas-powered range extender for Tesla vehicles, has filed for bankruptcy. Three subsidiaries owe about $37 million combined and have been shut down by the court. The powertrain unit had nine employees left when it filed, and the patent unit had none. The bankruptcy does not necessarily end the underlying technology. The parent company remains active, and the insolvent patent unit held methanol production and carbon capture IP. For anyone tracking low-carbon transport and clean energy tech, the story is less about one failed Tesla conversion and more about what happens to niche engineering assets after the money runs out.
