I, too just experienced the sudden transmission failure. After a lot of no answers why, except Honda is completely replacing at their cost (extending warranty), I finally got the answer as to what goes wrong. Apparently, the transmission fluid cap can be locked into position 2 ways. In one direction it will be fine. If pointing another direction, the shift lever will actually knock into the cap, loosening it over time (and/or knocking it off completely). Then transmission fluid drains out causing catastrophic transmission failure. It's a simple fix, but must be a secret so oil change places and even dealership service centers may put cap on in the "problem" position. The owner would be none the wiser. Honda was accusing me of lossening cap?!?! But then is replacing at their cost. Ive seen lots of issues with this and no one knew why...so I thought it important to share. Honda seems to want to keep it quiet but a dealership Service Manager explained it.