Tangential space elevator material currency standard

Start by building a small space elevator out of carbon nanotubes. This is done by exploiting large quantities of carbon as are available in the atmosphere as carbon dioxide and in the crust as fossil fuels. Hence the world goes from depending on fossil fuels economically and creating a large carbon footprint to depending on carbon nanotubes. Base the currency standard on the nanotubes.
However, this is no ordinary space elevator because it starts horizontal and stretches out in a straight line. It's supported from beneath by nanotube struts. This material is in relative terms almost exclusively used by the bridge/elevator since it's a megastructure. As more is manufactured, inflation becomes tangential - the bridge is tangent to the equator and inflation is largely calculable by the trig function of the tangent (i think).
Once the bridge gets beyond a certain length, it will either collapse or need more material. Obtain this by sending a craft along the bridge which will travel to Deimos, largely made of carbon, and bring it back using a mass driver.
This will solve several problems at once. Firstly, it will make inflation tangential and therefore predictable, so financial decisions can be based on a known rate of inflation. Secondly, it will provide a profitable material into which carbon can be sequestered whose majority will be outside the atmosphere - no more carbon footprint. Finally, it will make it possible to drive into space from a horizontal position, easing space travel phenomenally. Needless to say, these vehicles would not be powered by fossil fuels. Moreover, a series of off-ramps would make this equivalent to a road system and the force of the planet's rotation would help the vehicles travel up but not down.