RC Guys.....Electric, nitro and diesel?

[Brianut]

I have owned both electric and nitro versions of RC in the past and have always liked them.
someone linked me an RC Bronco, cool seen it want one but next to it was a link to this and many other vids.
looks German.
Are they actually small diesel engines? and a legit "air horn"
if so that is really freakin cool.

http://www.youtube.com/watch?v=xHYADtgR ... ature=fvwp

one more. "honey can you get the garden ready for planting?"
Sure but Im gonna need me some equipment.
http://www.youtube.com/watch?v=9g5uX9G6Ogs
freakin cool.

not seeing smoke so I assume they are electric with some sort of speaker noise maker?

[Rox Crusher]

Man, those things are awesome !

I just gotta win the lottery some day.

[Justin]

I'd be way more willing to do yard work if I had those. The semi in the first video is likely electric with a sound effects box wired in. Still really cool. One company used to make diesel conversions for nitro powered engines, not sure if they're still around.