> Electric car or not shouldn't there always be an incentive for extra occupants? Those cars require a huge amount of resources to make and run. Personally, I think even the tax breaks are off. The biggest tax breaks should be from not owning a car at all. The second is probably not buying a new car because you're not using additional resources. Then maybe new electric cars followed with hybrids.

I responded to a similar comment above, but I'll repeat it here. If we want people to share the same vehicle in those lanes we should probably just close it to everything but buses during rush hour and then actually put more buses on the road.