We are the country of the "Marlboro Man" rugged individualist, and anyone that thinks we will get rid of a personal vehicle is wrong. Things are changing to be sure, but while personal car ownership may start to disappear when self driving is perfected, cars will still be around.
Musk has recognized an area to develop that no one else has done and he did it. Tesla sales will continue to grow more rapidly than most, but as other manufacturers get into the game Tesla market share will shrink because the market is growing rapidly and others are finally jumping in.
To anyone out there please listen. If you are in the market to buy a car, new or used, please know that the value of an ICE car will dwindle significantly.