Sooooo... I've been kicking around the idea of starting a bike rental business here in Yokohama. I'm thinking, if I could get 8 or so CarryMe's onto a Yuba Mundo or Big Dummy cargo bike then I could just ride out to one of the nearby tourist spots and start doing business. Actually, I'm sure it can't be THAT easy - but anyway, if I was to buy a small fleet of CarryMe's for this purpose, what sort of maintenance and repair issues should I expect, and what parts do I need to load up on?