My own Hot Wheels track piece, Something I felt was missing from what is sold. Works with most cars at medium speed, just don't overdo it.
Connects to any Hot Wheels track with a connector, both my connectors and the Mattel ones work.
Supports and 0.2mm.
Supports are a pain to remove, but worth it in the end! just cut them and do it a section at a time.
Made from scratch in F360.
The author hasn't provided the model origin yet.