Want to overwinter this beautiful Vining plant in my garage
We'd have to ask how cold the garage gets and how much light can be provided to the plant.
Black-eyed Susan vine (Thunbergia) is native to Africa, growing as a perennial in zone 10-11. It can't take very cold temperatures.
That said, you could grow new plants from tip cuttings, or try to keep it as a houseplant over the winter, if you can give it enough light.
Be prepared to it to survive, but not necessarily thrive during that time. It will likely drop lots of leaves and look pretty rough before it can be cut back and put out again net season. You will also need to watch closely for pests like spider mites.
The following Extension page will help:
This publication is also helpful: https://extension.umd.edu/sites/extension.umd.edu/files/_images/programs/hgic/Publications/HG105_Ove...