I sometimes think billboards are watching, beaming out messages meant just for me. Then I get back on my meds, and everything seems fine. Anyway, BMW's Mini, as part of its "Not Normal" campaign, worked with agencies Iris and Vizeum over the summer to personalize content to drivers of its cars on nine consecutive digital billboards along a busy London motorway. Spotters armed with iPads identified approaching Minis, and the text and images on the boards were then tailored to the individual cars. Drivers' photos were even flashed on signs further up the road. Offers of commuting snacks, car washes and flowers were also in the mix. For example, a driver in a grey Mini drove past successive signs that read, "Early start, Mr. Grey Mini driver? … Need a pick me up? … Fancy a tasty bacon butty? … Mini's buying … See you at the next garage." Nearly 2,000 Mini drivers received such personal greetings in a week. All those folks driving Vauxhalls probably felt sullen and neglected. But that's nothing new for them, now is it?