I'm only mid 20's but went all in on Tesla June 2020 when it had dipped and my current returns are over 400%. The outlook for the future is also very bright with the soon to be opening of two Giga-factories in both Berlin and Austin (Texas). This will help ramp up production and help to meet the long list of demand from all round the world. They are light years ahead of any competitor in the car industry when it comes to EV's, and I personally still think the stock is currently undervalued when looking at the potential catalysts in the near future.
I also have some shares in another fairly new EV company Lucid (LCID). Bought in cheap when it was rumored to be merging with a Saudi investment fund as a SPAC. They have recently started to produce their first cars and the rollout process has begun after selling a few thousand of their new car. Compared with Rivian (who are yet to produce one car), I think Lucid are much better value and will have a good run-up in the years to come.