Indeed, invention in 2010, Aerothon : step&bowshooting  : 

 Xiomè step,

now with same backwheel (disc brake) :

 Disc brake will be implemented....

 Xiomè : 

 Almost final model :

 for the those who likes to copy things....: indeed 2011 form

 Proto 2 and 3, proto 4 is coming : 

 Proto 2 Xiomè : 

 Busy with a new one : 

 

 building a new one :