David would have passed this Sparky's Truck Stop on both his trip to Eagle Grove and again after loading and en-route to Sac City. If David was seen at Sparky's on video early in the evening hous prior to loading, I don't see the significant, since it has obviously been confirmed he picked up his load at Eagle Grove (the little pork chops were in the trailer).
But if David was seen at Sparky's on video after loading in Eagle Grove, and video clearly shows David was not in any distress at the time he got back into his truck, that would be very significant to the investigation. If this is a criminal case then something must have happened after the point David exited the store and returned to his truck.
I would assume at this hour in the morning David would have parked at the truck fuel island which are normally heavily covered by security cameras to capture information helpful in cases of people driving away without paying for fuel. If someone would have entered the truck while David was inside the store while parked there, I think that would have been captured on video. Or at the very least activity in the parking lot would have been captured.
This Sparky's is a fairly new store, since the place burned to the ground in 2021 when a semi caught fire while parked at the truck fuel island which also caught the building on fire. This new store likely has the latest in surveillance cameras and technology. I did find one recent picture of a camera that covers one side of the building (circled in red), from this picture you can see a semi in the refection of the window so I think there are cameras covering some of the area where trucks park. But I haven't found any pictures showing the location of any other outside cameras pointing directly at the truck fuel island or other areas of the parking lot. The truck fuel island is the island that is pictured.
If you look at the current Google Satellite image and Street View, I believe these images are of the station before the fire. You can actually Street View into the parking lot. The truck fuel island shown in these Google images show the truck fuel island connected to the building. After the fire the truck fuel island was rebuilt and moved away from the store. (Ya, that's a no brainer)
Any locals willing to go on a field trip to document where cameras are located inside and outside on the new Sparky's building?
JMO
The fire was reported Tuesday near Rockwell City, Iowa.
www.ktiv.com
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JMO