I am moderately experienced in Blender animation, and especially in roller coasters, as they're my special interest. One thing that has always bugged me in animated movies is the lack of realism of the roller coasters. Now, you could say I'm being petty, and I'd agree with you, but still. It has bugged me. I've always strived to make roller coasters in animated movies more realistic, so I made the Chillaxe Coasters channel. This channel is dedicated to me making roller coasters of any type into Blender and posting it online.
Examples: