Jet Power your bike
Robert Maddox from the US state of Oregon, builds and sells jet engines on Ebay.
Not great big useless ones for planes, but the kind of thing everyone needs, small pushbike sized ones. $650 US pesos will get you up to 75mph on your treadly.
Apparently he has larger ones, perhaps motorcycle size?
Click read more button for link and picture
Roberts Ebay Jet Sales Page