Trip Odometer resets itself

Car is a Boxster S 2001. It looks like the trip odometer decided to reset itself on its own; just before it happened it was reading 25.6 miles. I
stopped to go to the store and after I resumed driving I noticed that the odometer was reading 2.6 miles. Does anyone have an explanation / experience with this behavior?.
P.S. Today was real hot in the Virginia / Washington DC area.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Site Timeline is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.