Polaroid Square Shooter Triptych

As I recall, if you covered the little sensor on a Polaroid Square Shooter, it would hold the shutter open indefinitely. These were timed exposures of cars, street lights and signs. I remember taking these shots and they are, apparently, the only ones I did like this with the first Polaroid Square Shooter I had.

You can see that each one features different techniques and lighting sources. The first one is car headlights and tailights, photographed from a long and stationary distance away. The last one is also car lights, but looks like it was taken while driving in and among traffic. The middle one appears to be street lights or signs and I was "painting" with the light and attempting to make designs.