Traffic, traffic, traffic...
This is woeful. A few days ago a 78-year old mathematician, Professor Papert, from the US was knocked into a coma. HORRIBLY ironically he was talking with another prof about the traffic when it happened, at least that's how I understood the following from the article - "The accident occurred when Professor Papert talked with Professor Wilensky about a math model, imitating the current situation of Hanoi’s traffic, where transport lights are not enough, and motorbikes speed dangerously..."

Or does that mean he was lecturing on that topic prior to the incident? The article isn't the Mae West I'm afraid. A shorter International Herald Tribune version here.