> The question would be whether this is an "ordinary carpool on a cost sharing basis." Lawyers are paid to argue about these things.

I imagine the intent of this is to cover 'informal' car sharing - e.g. you have a roadtrip with a friend and both pay for petrol, or you drive to work with your neighbour and share costs.

Not sure how it would apply to Lyft Carpool - I think initially your insurance company would push back on it.