Next door, Big Sky offers huge, open boulevards, six and eight car lanes wide, as if the locals race tractor trailers down here in the off-season.

FORBES: Just the ticket

In an attempt to reduce congestion, the US has had car pool lanes for decades.

BBC: VIEWPOINT

Yet more than 90% still commute alone, leaving the car pool lanes empty.

BBC: VIEWPOINT

Importantly, the data is then translated into a driver warning when a hazardous traffic scenario occurs such as an impending collison at a blind intersection or a car changing lanes in your blind spot.

FORBES: Get Ready For Talking Cars That Don't Crash And Get You To Work On Time

Mr Darling told BBC Radio 4's Today programme that car-share lanes had been used successfully in the US, Australia and Canada.

BBC: NEWS | UK | England | Bradford | First car-share lane to be built

And I was frantic, intimidated by the way he swung his little car out across the lanes, overtaking recklessly on rises and bends, as if to warn me of the storm to come.

NEWYORKER: Hand on the Shoulder

One secret there is that it created high-speed toll lanes -- free for car pools -- in the median of an existing freeway.

FORBES: Follow through

I'm at one of those intersections in which two lanes become one because of a parked car in the right lane ahead.

ENGADGET: This is the Modem World: When tech can't save us from road rage

The proposal would extend the existing decking out over the innermost vehicle travel lanes, preserving the same space for car traffic and adding new width for bikes and walkers.

WSJ: Bridge Traffic On Walkway Stirs Concern