My first post about stocks on Reddit: I bought HYLN and now I don't know what to do with it (a small auto company)

This is my first post here about stocks, honestly. I only started investing a couple of months ago, reading Reddit, watching YouTube, and trying to understand something. Before, I just threw money at Bitcoin, but now I wanted to try normal stocks. And then I stumbled upon HYLN. It's a small American company (market cap of about $350 million) that makes something for trucks. Not ordinary electric cars, but something unique called KARNO — a linear generator that can run on gas, hydrogen, even diesel. Yesterday (February 24), they released their report for the whole of 2025. I read: – they earned only $3.5 million for the year (almost nothing) – they lost $57 million – but they have $152 million in cash, which they say will last for a couple of years To me, it sounds like “they're not making money yet, but they have enough cash for now.” I bought a very small position (less than 1% of my portfolio) because I liked that the technology is already working — they showed 175 kW and passed some tests. They write that they want to start selling the first units to customers this year. If it works out, it could grow significantly. And if not, well... it will be the same as always with small companies. I'm a complete novice, so honestly, I don't know if it's a good idea. Maybe I was just taken in by the pretty slides and the word “hydrogen.” But I'm interested in the automotive industry, especially heavy trucks and anything that doesn't run on regular gasoline. Does anyone else hold HYLN? Or can someone explain to a newbie — is this a normal company or just another lottery? What do you think about this KARNO? I would be very grateful for your comments, because I'm just starting out and want to learn from your opinions. (This is not advice to buy, just my first analysis, DYOR as they say).