Some dude at the bus station wants to know what bitcoin is.
you don't have much time and he won't be able to take in to much information.
a simple look it up online won't do, because that's not interesting enough to read a lot of boring stuff online.
What are 2-3 short(!) key features of bitcoin, which i could tell him, so that he has a basic understanding what it is? And of course so he will be interested to learn more about it.
i will only stick to a couple of key features that make bitcoin good in my opinion:
1) decentralization
2) anonymity
3) speed and security
and also depending on my mood i may get into specualtion about the price and how it can rise over the years making bitcoin an excellent investment for long term.