Those cars don't make up the lions share of the profits, they make up the profits. Jeep is worth more than FCA because the other brands, with the exception of Maserati, are losing money.

You're right about the driverless thing being farther out than these big companies seem to be leading people to believe. It's somewhat straightforward to get driverless working in 90% of cases, but the remaining parts are basically unsolved as far as I'm aware. I think automated highway driving is the best we're going to see for at least a few years.