Ah, this was cool!
For TLDR fans: 2 Pizzas -> iPad -> 1oz Gold -> Berkshire Hathaway Class A share -> Tesla Model S -> Ellen Degeneres ranch -> first Superman comic book -> 2 special edition Lambos -> Paul Newmans Rolex -> Mark Rothkos No. 6 -> Lockheed Martin F-35A jet -> Excellence V yacht
It has been a roller coaster ride indeed. But we are just getting started. Transactions topped USD 1B only last year. For anybody interested, there is a Twitter handle that tracks the value of those 2 pizzas in US dollars everyday:
https://twitter.com/bitcoin_pizza?lang=en