There are various schemes around and some work through websites that are independent or even council run and this helps a bit.
As a woman I just would not get involved, no matter who ran it for fear of problems. It makes me too vulnerable. I think that it is a sad world however.
I would happily take work colleagues or friends anywhere though and often do join up trips where we can but what if you change your plans or have to stay back at work ?
Well one scheme in London had a solution - you have a car piggy bank scheme where someone else would take you - I don't know if it still runs...
I think that having it is a great idea but I think company based one's are good but not run by the company / business (again and sadly now-a-days for fear of more reprisals)!
Colleagues have previously 'worked together' and I think that more can be made of this.
But then I usually much prefer to drive myself.
When driving abilities are different an unknown 'to you', 'passenger', may indicate that you drive 'in chauffeur mode' and that may not be what you want - either...
So there are good points and bad and I think that if you can make it work then great, but it is a tricky one to get the right balance ....
and the liable is fraught with problems .... esp in this day & age...
The congestion actually works itself out, and with properly run roads with free flowing traffic, as
much as possible not deliberately slowed as seems to be happening, then the natural flow of the road is less constricted, and people work out their trips to avoid the busiest times... it literally and naturally flows, if you don't go in and muck it up !!! The attack on our roads causes many of the problems that they are now supposedly
trying to solve!
A classic case of - create a problem = solve the problem = pat on back !!