Really, rather than using “Tesla” specifically as an example, let’s compare the entire electric car “industry” to what was erroneously called (in the previous forum) the AWE “industry”:
Many manufacturers have enjoyed successful product launches, with millions of electric cars in production and on the road. They started with some known components (cars, electric motors, computers, and batteries from laptops) and have successfully (so far) combined them into products that people like and use every day for their intended purpose.
AWE, on the other hand, combining known components (kites, blimps or balloons, and wind turbines or powered winches) has zero products in regular use, with most companies having already failed, and the rest still not achieving any commercial success thus far, within a comparable (almost identical) timeframe…
Regarding the whole “self-driving” promises, I knew the whole time it would be MUCH harder than these “visionaries” realized, especially when it is based on either cameras, lidar, or radar, etc. independently-mounted on each vehicle, and onboard, individual A.I. (artificial idiocy?) software.
My go-to example had always been, "What happens when a trash bag is blown across the street, and the “A.I.” interprets the camera data as a pedestrian running into traffic, causing a twenty-car pileup accident to “save the pedestrian’s life”?
What happens with snowy or muddy roads, animals or obstacles in the road, washed out or flooded roads, crazy moves by other drivers, oil slicks, black ice, and so many unknowns that can only be handled by an actual human driver who knows what he is looking at, such as a mere windblown trash bag, versus a running pedestrian?
I’ve always maintained, for at least 30 years, that someday, there will be a future where we will have no traffic jams, even at rush hour, and all cars will travel together at high speed on the freeways in close spacing, with very few “accidents”, but it will require all vehicles to be in constant, instant, inter-communication, much as airplanes have transponders alerting each other and the whole system as to their speed, location, and direction of travel, whereby vehicle control can combine all that information taking all the info from all the vehicles into account and the requisite split-second decisions made in real time.
The result will eventually be cars going through intersections from all directions simultaneously (no more “red light, green light”) at full speed, missing each other by mere inches, to where you wouldn’t even want to look out the window for fear of being scared to death, with the cars of the wealthy “negotiating” faster travel through intersections in real time, if there is an issue with who has priority or gets to go thru first. 
