Solve self driving? How bout market prediction and just play the market forever. Why would you risk failure when you can just do nothing and make trillions?
If someone offered me AI that drove me to work while I slept or watched movies, or AI that filled out my expense reports, I'd ask if the AI is able to scan the receipts by itself.
Just start a software consulting business. An outsourced programmer goes for $100+ per HOUR. No need to have the initial capital you need for market prediction.