For someone to scale it down to rc level is quite impressive
1. MBX-6 T8 1900KV, RX8 ON 4S
2. MBX-5T 1520, MMM ON 5S
3. MBX-5 ONROAD CONVERSION 1515, MMM ON 5S
4. MRX-3 ON ROAD CONVERSION 1512, MMM ON 6S
5. TEN T 2650 T8, MMP ON 3S
Miniature steam engines & stationary engines have been around for decades ( or longer )- I had a friend at school who had one in pieces and was slowly building it at home. Installing the engine into a model truck chassis and controlling the throttle assembly via rc isn't that much of a leap ( normally you put them on a looped track and set them off- they only stop when they run out of steam... /bad pun ), but it is awesome none the less- there are a few videos of steam powered trucks about as it happens..
[youtube]1s9vQx7OvB4[/youtube]
this one was posted just the other day on another forum- think it used to be Tamiya Mamoth Dumptruck judging by the chassis and suspension design...