Whilst its true that the people doing research and reports tend to be from an anti perspective if that's the right word the absence of any counter evidence from the Pro lobby it perhaps most telling - they don't seem to be able to come up with any counter evidence full stop.
Is this predict and provide? I think there's stacks of untapped suppressed rail demand so just build new rail lines look what happened when the Borders Line/Ebbw Vale reopened and more people than predicted used it........
But what is the criteria that decides? We currently have had since the Torys got back in every backswood Tory MP in the country promoting their local scheme(s) as "vital" to their local area and "unique circumstances mean its a national priority" theirs now so many of them approved or under active consideration it very much looks like its a national programme without the label. In a 40 mile radius of Newtown we have a bypass around Newtown under construction , the local Tory's are now lobbying hard for two bypasses that straddle the border one on the A483 Pant/Llanymynech and the other on the A458 @ Buttington. In Shrewsbury a "north west relief road" is being lobbied hard for despite there being bypass built in the early 90's which "replaced" the 1930's bypass....and there is a multi MP campaign to dual the entire A5 between Shrewsbury and Ruabon.
Electric Cars - no infrastructure to support recharging yet and also the range issue. None of the current electric cars can guarantee 100 miles between charges due to variable road conditions. Mr Petrolhead screeches to a halt a a filling station an in a couple of minutes hes off again with a full tank. Are people really going to undertake long distance journeys by electric car with the hassle of recharging? The prized convenience of your own vehicle would appear to undermined. This could be good news for long distance

rail travel demand and railfreight.
Obviously we will anticipate the technology getting better as an answer but it isn't there yet not by a long shot.Electric Cars cant solve congestion they will sit bumper to bumper the same as petrol vehicles do.
Autonomous Vehicles - the high tech industry in search of funding/future profit follow the $ and £ behind this- the technology is massively way off yet even further than Electric. Just look at the Uber self driving scandal in Arizona. Secret E mails to the Governor , a pedestrian killed by a self driving car.
Of course you can have SMART cars that can inform you of congestion ahead and alternative routes but when there's no way round what does it do flash up "Stay AT HOME TOO CONGESTED" .........and of course the other conundrum heres all these Self driving cars being safe and cautious and respecting each other what happens when Mr Petrolhead who wont give up on self controlled driving appears weaving in and out of them. Do they all STOP because its dangerous?