For example, Japanese engineers created the car named Tama (https://jac.lt/en/ev/tama-the-ancestor-of-nissan-leaf/) 70 years ago, which had the autonomy of 200km. 
Doesn't that makes you wonder if the progress is being oppressed on purpose? 
Imagine what we could have today
Yes it was opressed or supressed by the mechanical engine car manufacturers and rich oil companies, because even I saw an article about successful electric build car atleast 50 years back but they never got mainstream. Look at Tesla which isn't a company grown in one day, he faced lot of struggles to make the vision possible. Doesn't that makes you wonder if the progress is being oppressed on purpose? Imagine what we could have today