This one has the provision for stowing, the mounting points, the switch.  

Despite the clean renders in Blender, it was still a hot glue mess.  There has to be a lot of extra wire in order to disassemble it.

The mane concern is how stiff the steering is.  There's a lot of friction in those PLA bushings.  It may end up requiring ball bearings with hall effect sensor.  The string slit could be moved farther out.