The inherent problem with any human powered en mass vehicle is that its passengers are also its power source, as its passenger numbers change so too does the power to rate ratio of the vehicle which may vary to the point that the vehicle is immovable with a single passenger or at least very inefficient. This is due to the vehicles un-laden weight consisting of all the components necessary to accommodate each passenger and the structures needed to span a larger wheel base, this weight is fixed regardless of its variable power source.Although a highly efficient power to weight economy when operating a full capacity this economy drops off markedly as

passengers depart.

One way to circumvent this problem is to normalise the vehicles power to weight economy by way of modularity, as each passenger departs so too does their vehicular weight component. Although at a slight decrease in the power to weight economy of the individual and total vehicle due to the increase in fixed weight per passenger such as the multiplication of wheels, steering and transmission components the total vehicle power and weight remains constant regardless of passenger capacity.

This linear coupling means that the modules must depart the convoy in the reverse order that they were coupled – the last module to join the convoy must be the first to depart the convoy and vice versa although this might be problematic for a public transportation system its ideal for carpooling – an instance when passengers are picked up one by one along a route, arrive at a single destination, depart that destination at the same time, are dropped of along the same route in the reverse order

that they were picked up

Another problem of larger vehicles is their large turning circle, the design overcomes this byhaving independent modular all wheel steering ensuring that each module near perfectly tracks the line of the module that preceded it – the entire vehicle convoy, regardless of length has a turning circle little more than that of a single module

Modularity also offers the additional benefit of autonomous modules, fully functional vehicles in their own right that function just as well by themselves as well as they do in unison. This ability for independent use means that the same design of module can be used progressively by different users with different needs – younger users can use them whilst in the supervision of guardians and when they become capable

can use them independently.