Tesla

Elon Musk's account retweeted "Self-driving Tesla SUV saves Branson man's life":

Just a week after Josh bought his space ship on wheels, he was in the middle of his commute home for his daughter's birthday, when he felt a sudden pain.

"A little past Highlandville it just hit where it was the most excruciating pain I've ever had," Neally remembers.
He didn't realize he was having a pulmonary embolism. The blockage of an artery in his lungs could have been fatal.

"It was kinda getting scary. I called my wife and just said 'somethings wrong' and I couldn't breathe, I was gasping, kind of hyperventilating," Neally says he was writhing in pain, and totally distracted from driving.

So he trusted the self-driving Tesla to stay on the road, until it got near a hospital. Josh was able to drive himself the last couple of blocks to the ER.