I enjoyed the vehicle—it adds significantly to the feeling of being outside on the sidewalk, of arriving at some meaningful destination.

I enjoyed turning around and seeing how small the door looked from where I had gotten.

I liked walking backward for a while, just watching things quietly recede.

I liked that the renderer started to struggle to consistently reveal the (increasingly) distant squares of ground. Only if I turned the camera the right way would a single row of pixels appear in the darkness. Eventually the only way I could tell I was going straight was by looking back at the lingering 1-pixel dot of the door and strafing slightly to center the intermittent blinks of the visible sections of floor I passed previously.  Eventually I must have passed the final visible square and gone too far, because I lost sight of everything and became completely unable to determine my direction or distance from the entrance.

It was an interesting experience.