Yesterday Nissan previewed a clever new sensor technology that does more than just beep when you're in imminent danger - it actually intervenes a little bit. Sensors are put into the driver's blind spots - typically to the immediate sides and just behind the driver's seat - to detect if you're getting dangerously close to any other vehicles. Presumably if the technology is adapted for white vans, this mean will mean that everywhere but straight-ahead will be covered in danger sensors...