Second, due to several other reasons and projects, I don't have time to keep the series going, and the next two episodes will go from the usual "episode per day" to "episode each every two days". So, if everything goes according to plan, episode 74 will be released on Wendnesday and 75 will be released on Friday (it is very likely that the last one won't be released at noon, too).
Third, a port of Tale of Kingdoms to Minecraft 1.2.5 has been released here, I don't know how it was published without me noticing it for months, but better late than never, I suppose :S
Finally, episode 73, where we start the rail system and keep building. By the way, remember I am using outdated versions of a lot of mods! So it is very likely that the latest version of Steve's Minecarts will have some sort of extra options to tell the cart assembler to stop moving forward if it needs some materials, or even to go back to get more.