Driverless Cars

Just been on Radio Merseyside talking about driverless cars (about 1 hour 25 minutes in). It was a bit nerve-wracking and given the impetus for the story was Vince Cable's announcement today about running trials in the UK and loosening regulation I was a little surprised not to be asked about that. However I suppose the Google car is cooler and I'd thankfully read just about enough about it in the hours leading up to the interview that I could answer a few questions sensibly.