Ow I had the same thing
I also lost my Sunglasses...at an bar at the beach...I went back and lucky the assistant had seen them...YEAH!!! my 90€ Sunnies back...
I went back on my bike and I had to brake hard..now...my sunglass shoved off my face landing right in front of my frontwiel and I drove over them

thats what you get when ur driving with an Half oversized helmet...and in the mirror I saw more cars driving over my Sunnies Noooo!!!