Many car drivers are surprised if they discover how much data their vehicles already collect about them, and increasingly determines actions such as braking, acceleration and also gear changing, if they have automatic transmission. This is only going to increase, for even if it is years or even decades before full autonomy becomes widespread, the technology will march forward at a faster and more predictable rate so that vehicles will be ready to roll as and when regulations allow. Features of autonomy will infiltrate both driving and navigation in any case, testing the boundaries between privacy, safety, performance and insurance. Rather different issues and priorities arise according to the vehicle and journey type. Owners of fleets for example will be…