The help that Tesla has received from government is badly exaggerated.
https://evannex.com/blogs/news/the-true-amount-of-tesla-s-federal-subsidies-zero
States give the company tax breaks to build its factories there. This is true of any large corp. The corp gets tax breaks, and the state gets jobs and tax revenue.
Yes, the earliest cars were electric. Some were steam powered. But the internal combustion engine beat them out for power and range and reliability.

Water powered cars? Oh lord, Please take some chemistry classes!

I don't live my life waiting for crumbs. You can take control of your own life, and capitalism is the engine that can make that happen. I did it by learning how capitalism works and then putting it to work for me. It is an enormously great feeling to be in charge of your own life. I highly recommend it. If you are a young person it is not hard. Save money. Live on half of what you earn. Invest your savings on whatever grabs your fancy or interests you. If it doesn't work, try something else. Sooner or later you will hit on something that will scale and make you financially independent.

Good luck to you and your endeavors!