I FOUND THE YELLOW PRINTED SLOPE BRICK FOR 10600 (see last photo). Now only missing the yellow hose.

Lego DUPLO Disney Pixar Cars Movie. 2 sets:

10846 Flo’s Cafe (2017) 28 pcs. UPC: 673419265416 - Complete

10600 Classic Race (2015) 28 of 29 pcs. UPS: 673419232616 - missing 1 yellow hose.

No box, no manual. Copy and paste the links below and it will take you to LEGO Customer Service site where you can download the PDF of the instructions.

https://www.lego.com/cdn/product-assets/product.bi.core.pdf/6115082.pdf

https://www.lego.com/en-us/service/buildinginstructions/10846

The pieces are in very good condition with light wear. Clean and from a smoke-free home. Flows café is complete.