This was the evacuation route explosion that killed the 70 people.
Interesting that way back when it happened, Hamas very quickly put out footage of the explosion occurring as they very luckily happened to be just a couple of vehicles back from the vehicle that exploded. I did post the footage in here right after it occurred, but the source was unverified, thus it was deleted as is understandable.
I've looked for it since on MSM, but oddly can now only find the 'aftermath footage'. I can say that all the experts that I know that have seen it back when it happened (and frankly IMOPO too) and the consensus is the explosion was under the vehicle (IED) or came from within the vehicle itself (VBIED) while possibly transporting munitions. It sure as heck wasn't an airstrike and all the comments on the video pointed that out too.
The IDF can never "explain" that incident because they actually weren't involved in it. IMO. They probably did verify 70 bodies based on the footage I saw, but they sure as heck didn't verify the cause of that explosion.
But, if anyone does happen to come across the actual footage of the explosion again, I'd certainly appreciate the link being sent my way please and thank you!