How far can you get from one block of bedrock in vanilla Minecraft?

Aprils fools? See the grass block video here -    • How to play through most of Minecraft from...   Download the map yourself - (Don't download V2) https://www.minecraftforum.net/forums... MAKE SURE YOU DON'T DOWNLOAD V2 - click the link above. I would link the actual download to the map but youtube has already crucified me once for linking to Sildurs shaders pack :(