All of the CARS Toons & Shorts have been upgraded to HD/1080p so if you’re keeping track or want to upgrade … Here is the complete list …

“Mater and the Ghost Light,” is on the CARS Blu Ray (also 4K Blu Ray). If you collect the other Pixar Shorts, you can find it also on Pixar Short Films Collection: Volume 1 .

“Air Mater,” & “Time Travel Mater” is on the Pixar Short Films Collection: Volume 2.  A bonus feature is they are also available with commentary.

“The Radiator Springs 500 1/2” is on the Pixar Short Films Collection: Volume 3.

I think all three discs are collected on the Pixar Short Film & Pixar Story Complete Preservation Edition.

Cars Toon: Mater’s Tall Tales is also upgraded to Blu Ray. It contains all the shorts* plus “Air Mater,” & “Time Travel Mater” It does NOT contains “Mater and the Ghost Light,” “The Radiator Springs 500 1/2” or “Miss Fritter’s Racing Skoool.”

“Miss Fritter’s Racing Skoool,” is on the CARS 3 Blu Ray.

*The shorts marked Pixar Popcorn are ONLY available on Disney+ for now … They are “Unparalleled Parking.” and “Dancing with the Cars.”

(Pixar Popcorn also has shorts from other Pixar films).

Pixar Popcorn | Official Trailer | Disney+

Tales from Radiator Springs shorts are also (only) available on Disney+ …

Tales from Radiator Springs – Spinning did not turn up in the search. So, there is your complete list and where to find them. They are all available on Disney+ except for “Spinning,” If you want your copy on Blu Ray, all are available other than the 2 Pixar Popcorn ones and the 3 shorts Tales From Radiator Springs.

Of course,Cars on the Road, the 9-episode TV Series is only on Disney+ so far …