A short post for today - Similar but not the same?

A few days ago I was driving along LDP in the heavy traffic I saw this creeping up on my left side and then was driving right beside me. 

I was driving my trusty white car that day.

So I thought he was driving the same type of car as he was and I turned my head towards the car, smiling at the driver acknowledging "that we were driving the same brand of car". But he refused to turn his head towards me at all even though my car was actually pacing his car for a good 250 meters or so at about 25kmh due to the traffic.

I wonder why. Maybe he did not see me?