> is absolutely a solved problem I'm going to sell my car on Sunday to another private person. I will hand over the documents and keys, while he instantly wire

> is absolutely a solved problem I'm going to sell my car on Sunday to another private person. I will hand over the documents and keys, while he instantly wire transfers me 20k. Now all of a sudden it's not a solved problem anymore is it? And Bitcoin, please, that's old tech. There are way more advanced cryptocurrencies now that have high TPS and < 10 sec validation.