i'll echo the benefit of the twitter feed. I've had experiences where they actually know more than the driver does. ( altho often the driver just fails to share information - they are bad at that on firstcc )
lol steve come on, cars have had automatic lights for ages now. Certainly way more than 5 years! Havent you noticed how on a car in front they often come on briefly then turn off a few mins later when they drive under a bridge?