Hard to say which one I like the best.  Awesome video.  Love the pride and the workmanship you see in each engine.  I like going to The Oregon Steam Up, and see the old steam powered machines working. Cool stuff. 0:52 Both active and passive smoking at the same time  1:32 looks like the steam powered machine from the folk lore John Henry  2:30 Recumbent bike looking good 2:13 I'd like to have that, going to work like a boss, well my boss will be angry.   2:51 if this isn't a Tank Engine I don't know what is.  4:10 that dude make me laught so hard, look how  the smoke in his head HAHAHAHAHA  4:15 slight design flaw lol   5:47 See the boy with the red flag
At the time steam automobiles became popular - legislation required that an owner to have one who ran in advance of the vehicle with a flag as a warning to other.  The James Bond Car @ 6:59 - Lays down a layer of Fog behind it !   Anyone know more about the mini chain track tractor at 8:23, i would love to build or buy one.  9:32 - This is not a steam engine. It is a Stirling engine.