Below, you'll see any text that was highlighted with comments from the reviewer.
I just really loved how authentic this piece felt! Your word choices (gunk, vignette, indignant, etc.), the dialogue, and the overall tone of the story was very real and almost conversational--in a good way! It was also somewhat humorous, and I could identify with it.
I think you did a great job! It was a small little snapshot, and I don't feel like anything needs to be added. (But why is your mom afraid of going to the car wash? You could maybe do a prequel to this, if there's a good story there...)
I really, really like it! I think this is a piece that will stick with me. Great job, and keep writing!! :)