Can public transport systems facilitate re-wilding?

Kirsten de Keyser, 03 August 2019, Tags:

We recently spotted this piece about the revival of an ancient but electrically powered and suspended monorail in Wuppertal, Germany in the Guardian:
 
 
It stimulated considerable interest, because it fits perfectly with one of the most sustainable ways of delivering transport in the future potentially allowing us to rewild our green spaces into the barg: electric trains suspended from, or situated on, supporting pillars above the ground. If you build such trains along the routes of major motorways you can then minimise any further environmental destruction. We already see this multiple use of land surface in urban areas, as is the case in Wuppertal.
 
This would avoid at least one the many downsides of  HS2, which is that the route destroys far too much ancient woodland. However we need somehow to make sure that if it is cancelled, the money saved is not frittered away and is instead retained for the purpose of migrating road traffic off the motorways, which would have been the greatest benefit of the project. 
 
And of course, once you have installed suspended or overhead rail networks in this manner, then you can close (and preferably dig up) the motorways and reconnect and rewild the land underneath. 
 
Naturally this is a radical idea, but our future as a civilisation globally depends on a very aggressive rewilding along such lines. At the same time we need to recognise we can’t stop people moving around, so we need to propose and present alternative ways of doing so.