The CEO of Volvo said something very interesting recently. He remarked that the potential for self-driving technologies to reduce road deaths was so great that it would be irresponsible for car makers to introduce them too quickly. A premature launch could lose public confidence and put at risk the social buy-in needed for the technology to become established.
Of course the famous Mandy Rice-Davies line applies here: "He would say that, wouldn't he?" The large car manufacturers are all highly concerned that tech insurgents may come in and take this new market before they are ready.
Still, one can understand his view - something like 85 per cent of road deaths are the result of human error. Reducing that total significantly would be an extraordinary achievement. Losing that opportunity would be a disaster.
But the key point is clear: transport is about to change massively. No-one knows when, but at some point self-driving cars will become a reality. Indeed, many parents who drive today are already seeing the early signs, with automatic lane and distance adjustment, and self-parking.
In their own way, these and other huge changes may be as much of a transport revolution as the coming of the railways or the first commercial flights. They have the potential to make the UK a greener, safer and more inclusive place, as fossil fuel-powered cars are replaced by those running on electricity or hydrogen, autonomy gives freedom to people who may be house-bound and lonely, and young people book and buy transport on their mobile phones.
These technological advances, and others such as big data, will spark new forms of transport and could cut congestion by creating previously unimagined opportunities for vehicle sharing.
Yet it could also go the other way. Over much of the past century, the car has given people previously unimaginable freedom: to travel, to work, to escape. But at the same time our society has shaped itself around the needs of the internal combustion engine, at a serious cost to air quality, health and traffic congestion.
Rates of cycling, walking and active travel started to fall off a cliff in the 1950s. And many parents today are worried about letting their children cycle or walk to school.
These issues were all reflected by Mumsnetters earlier this month. In an AIBU thread, posters described how they had considered taking public transport, walking or cycling, only to conclude that driving was easier, safer and ultimately a better fit with the pressures of their daily lives. But active travel - if done safely - is just about the healthiest and greenest thing you can do.
So, if the government is to make the coming transport revolution work for everyone, it needs to do things better this time. It needs to think carefully about how we use those technologies, from electric vehicles to big data, and how we can take the full benefit of their environmental, economic and social benefits.
Just swapping thirty million petrol and diesel vehicles for thirty million electric ones would do nothing to solve our problems of congestion, obesity, or growing social individualism. In fact, it might well be a policy failure of epic proportions.
Managing this transition to a new tech-enabled world of transport is what the government's new Future of mobility urban strategy aims to do. It starts with cities, because that is where technology change is happening fastest, but we will move on to consider the needs of remote and rural areas as well.
The strategy proposes a set of nine principles for government and local authorities, so that technology can be used to make city transport safer, cleaner, and more accessible. They cover a host of areas, including new and emerging forms of public transport as well as private.
Of course, we will look closely at self-driving vehicles. But we are also going to examine e-bikes and e-scooters, and new models of urban transport based on shared use of vehicles and road space, through things like ride-hailing apps and car clubs. In practical terms, we will also be conducting a major regulatory review of transport, to examine whether we need new laws or whether existing ones will suffice.
But this is only one of a vast number of things the government is doing to improve transport. We have almost trebled investment in cycling and walking since 2010, we have announced a host of new measures to improve road safety, and we are investing to make roads better and more resilient at every level, from motorways to local lanes.
These past weeks, however, have been a bit different. With this strategy, we have taken the first steps towards using new technology to create a transport system that will, with luck and hard work, serve all of us better - and our children and grandchildren too.
If you would like to read the 'Future of mobility: urban strategy' you can do so on the gov.uk website.
We will be passing your questions on to Jesse Norman on Wednesday 24 April