I was thinking that - earbuds, etc.
Hot day, maybe really tired too from the heat.
The other day, busy 4-lane road, basically a highway inside the city just off the main highway - guy riding a RAZOR SCOOTER in the middle turn lane - very difficult to see.
Oh, and he was doing it in ......... RUSH HOUR TRAFFIC...........
(usually found under the "Why Men Die Young" category...