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I fail to see how they are progressing the technology or access to it.
The last Tesla interviewee I listened to said they see themselves as a battery company that makes cars. Make of that what you will. The self driving data might also be useful.
In the main I agree with you, but I do think their development of the technology around electric vehicles may produce important developments.
Toyota, Honda, Ford, GM etc etc were making fully electric cars before Tesla was even founded.
Perhaps Tesla have done a lot for the image of the electric car, but I fail to see how they are progressing the technology or access to it.