I understand where you are coming from. When you are used to people giving you space and then someone just comes along closer than what you are used to, it kind of freaks you out.

It happened on my commute into work last night. I work at 10:30 pm so it is always dark out. I had a PB blinky 5 on steady and a NR CherryBomb on burst. People almost always give me more room than need be. Well this cop passed me a little more than an arms length away. At first I was like why is this person so close and then realized it was a cop car. I got a good chuckle thinking to myself about calling the police department to report that a cop gave me enough room.