Long exposure - Light

A few days ago I decided to go out and take some photos experimenting with long exposure and movement of light.  I went out in the car, and whilst driving around I thought I could get some interesting outcomes by taking photos whilst on the move. So I went ahead and experimented by taking photos at random and shaking the camera a little getting movement using light, and by using different shutter speeds I was able to pick up different movement. I feel that I was able to get some effective compositions that I am pleased with, but also I feel that I want to experiment with long exposure using light further. Below are some of the outcomes that I got, some of which i am please with, and others which i feel are less successful.

3.2 f/29

3.2sec f/25

4.0sec f/22

4.0sec f/29

1.6sec f/32

1.3sec f/25

2.0sec f/32

4.0sec f/29

10.0sec f/25

21sec f/29