With the back door "Locked and Latched", per Chief Dan Shaw in the video at 38 seconds in the link:
http://www.wxyz.com/news/one-year-l...mom-jessica-heeringa-missing-from-gas-station
in my opinion, either Jessica left through the front door, or someone locked and latched the back door after Jessica was abducted.
Also in the link above the co-worker manager did not see Jessica, nor did she see the back door open.
If Jessica was in the van, how did she get in the van? The co-worker/manager and her husband watched the van drive to the back of the Exxon.
Was Jessica laying on the ground in the back of the Exxon station?? And the van driver puts her inside the van?
How did Jessica get inside the van if the back door was locked and latched?
Was there somebody inside the store to lock and latch it?
Is it possible Jessica could have been taken in a different vehicle?
Is it possible that there was a driver and a helper(s)?
Was the van "supposed" to be seen and be seen on video, as a red herring?
What other vehicles were around during that time period and caught on video?
IMOO.