I just picked up a wrecked Lamborghini SVJ Roadster for half price, but it arrived as a total non-runner with a 'dead' V12 and a gearbox stuck in gear. While most would fear a seized engine or a £13,000 shifter failure, the real fix required a deep dive into the car's supercapacitor and hydraulic priming system. See how we manually jumped the e-gear pump and performed surgical chassis welding to get this 770-hp beast back on the road.