I made a very basic rig/solution to animate tri-cycle vehicles (such as aeroplanes) that are animated with the front/nose wheel, while the rest of the body is being “dragged” behind it. While the content is very simple, I hope the video+content will get your creative juices going.
If you can’t connect it is most likely because my ISP have problems keeping my connection alive. Just keep trying and you should be able to connect.
EDIT: The AVI-files are much higher quality and requires TechSmith codec, so if you have the bandwidth, I recomend those over the MP4 versions.