“the car needs to be at least 20 years old, and with a day value of less than €1000.”
A 1993 Volvo 940 gets steering from a 2020 Corolla, brakes from a Bosch iBooster, and a throttle from an AliExpress RC servo. Openpilot drives it. The car cost under €1000. The self-driving parts came from salvage and hobby shops.