I made three bikes as little transports for the KSC and ended up posting them to r/KerbalSpaceProgram. A couple of users asked for the craft file and now here we are!
I hope you enjoy them, though they are rather difficult to handle. I'd recommend using the docking view to drive and use the spacebar to switch to 'rotation' in order to turn. The controls are a little awkward at first, but I learnt to use them pretty quickly!
Here is an example of the Adventure's agility! http://zippy.gfycat.com/MerryFarAracari.webm
(Note, while the picture above shows parts from KAS, I have removed them in the craft file and so they are all 100% stock.)