There are plenty of videos of lawnmowers that have been converted to run on steam, but nothing beats the original antique units. This is a turn-of-the-century Coldwell steam lawn mower, probably from around 1901.
This guy is operating this machine properly - looks like he's at least half as old as the mower, and he's smoking a pipe.
https://www.youtube.com/watch?v=Ql4a_KZ8n_8
