2017 Prius 2 NO acceleration/movement from full stop.

2017 Prius Two, Hypersonic Red. Hi! Well, I've got my own issue. 3 days ago I was driving my car and after making 3 stop and goes and now waiting at a stop light my car failed to move after stepping on the accelerator, it just hesitated, made a engine noise and inched along the intersection, thankfully not a busy one, I checked to make sure the car was in drive, even flicked the gear knob into drive a few times and still nothing, then halfway across the intersection at a very slow speed the car just started to go. At the next red light, hoping this was just a one time weirdness, the light turned green and nothing again, with cars behind me honking and all. Of course didn't make the green light and while waiting I turned the car off and back on, on the green light, I stepped on the accelerator and the car went forward, but it felt very rough, like the engine was moving it, from a low speed, the car had been shaking a bit, the engine sounded rough, I made it to work and after I just didn't feel the car sounded right. Called the dealer I bought it from and they advised I tow it in. I did and after they had it for two days, could not replicate it, drove it around and nothing again. They had never seen anything like it. The diagnostic tests showed nothing except a dip on the 12 volt battery.The final outcome was this...a task case was filed with Toyota, I had spoke to the service manager about this, saying I had read online other owners having the same issue, Toyota told the dealer that yes, they had heard from other owners, apparently they were plugged in by computer watching all the diagnostic tests being done. Toyota advised that the 12v battery be changed and that a service update be done. In all the reading I had done I had read about the same situation happening to another car and that there had been a Service Bulletin #T-SB-0241-17 issued applicable to 2016/17 Prius's. I told them about this and was told my car fell out of the series of numbers that this bulletin was for. But from what I was told Toyota said to do this update and that they had advised other cars to have the same thing done and they hadn't heard anything back after this has been done. I drove the car today and it seemed fine. I'm going to start my own thread on this matter and write Toyota as well, maybe even the NHTSA. I understand some have. If anyone has anything more to add, I'd appreciate this. This whole thing was very unsettling to me, this car hasn't given me any problems at all in the two years I've owned it. I had to pay part of the towing since I live outside the covered area to my dealer who have been very nice and accommodating to me. I get some relief knowing this isn't an isolated incidence but others are having this same problem. But of course my warranty is coming to an end but have been assured that this would be covered and THANKFULLY I did get the extended warranty, I never have got one before but was talked into it by a friend.