Curious why do you think he wants to change society ? His ideas are kind of outdated, people don't want flying cars, they want a virtual future. Neither is he the inventor of individualist liberal ideals.
That said, his comments on flying cars weren’t so much about flying cars — it was about the disconnect between society’s expectations of progress in technology vs our actual progress in technology thus far.
In the opening paragraph of the article, he sets out his ideological principles, which are not exactly conservative.