We got a look at Toyota's first self-driving research vehicle way back during CES 2013, and now the company will introduce the updated P4 platform at CES 2019. It upgrades on the second and third generation cars with the introduction of Lexus' latest flagship sedan, the LS 500h, but it doesn't stop there. The computer managing its technology has not only become more powerful than ever before, but it's also smaller so it tucks directly against the rear seat, and it only requires power from the hybrid battery, using a 12v battery of its own just as an emergency backup.