The ageing problem is solved mainly by depending on depreciation or over haul charge, while to solve the problem of out of repair is mainly to depend on operational management and maintenance cost.

First airlines, then road hauliers and railways, were freed from restrictions on what they could carry, where they could haul it and what price they could charge.

Driving between such major cities as Miami and Tampa is a back-numbing haul; flying between them, especially at the exorbitant fares many airlines charge, often seems impractical.