Reckless Taxi Driver

This taxi driver for transporting disabled people was driving like an idiot when I drove home from work. I took this photo to complain to the company, but I haven't done so yet... Some people really make the road unsafe...
My top list of things that annoy me in other drivers:
- Not using indicators (when switching lanes, entering roundabouts, etc)
- Not keeping proper distance to the car in front of them
- Driving very fast, but breaking for speedcameras to below the speedlimit thus obstructing steady drivers
- Switch lanes and entering the highway without first getting up to the same speed as the lane they are entering