It's plausible that within five years autonomous car technology will be so good that traditional cars will be regarding like standard clutch cars--a fussy option for driving enthusiasts only that the rest of us can't be bothered with. Maybe not five years, could be ten, but it will happen.
I feel it's going to be something like the iPod or iPhone or Facebook. You first hear about it and doubt its usefulness. But then you try it and can't imagine life without it. Or at least you have to make an effort to resist it.
I'm skeptical because I remember when the desktop computer came out and thought it would be of interest only to accountants and mathematicians.