Adding self-driving tech to your car is surprisingly cheap... and legal

Self-driving tech is on its way to cars — but for some, it's not coming soon enough. While Tesla rolls out updates to Autopilot incrementally and other automakers fine-tune their autonomous platforms after years of development, some ambitious drivers are tricking out their own, regular cars with self-driving systems. They're doing it with aftermarket gear that's available to anyone to buy and install, just like any other auto tune-up. Unlike a new set of tires or a lift kit, however, the DIY s...