2013 Prius 3 Dies Every 200 Miles Or So

2013 Prius 4: 197,000 mi.
Have had all Toyota recommended maintenance performed at 180,000 including transmission, ERG, throttle body, tune up, etc... Have oil replaced every 6K.

Sequence of Events:
Car "bucked" slightly and error message: Check Hybrid System. Stop vehicle in a safe place.
Then as I was pulling over a couple of hundred feet later (10 seconds in traffic) all lights on right side of display came on, triangle of death flashing on left side and car died.
All lights work, AC works, radio works. Car won't move.
SHIFT TO PARK POSITION and when I pulled over to park SHIFT TO PARK POSITION WHEN PARKED, which I already was parked.

After several minutes and a call to a Toyota tech, tried restarting. After a couple of tries several minutes apart it appeared to be normal until I put into gear, gas engine started and tried to move then SHIFT TO PARK appeared again and all lights came on again, stopped again.

A $325 tow and one week later, got car back from shop. No problem found that they could definitively tell me. They gave it a 2nd tune up, reset codes, cleaned throttle body again, cleaned manifold something or other and a bunch of little things to try and determine what was going on. They charged/balanced batteries and checked 12V battery.

Drove great for 165 miles, exact same thing. $70 tow later (I was in town this time) and 4 more days in shop with them unable to determine what problem was/is... They drove for a couple of hours and ran car for 3.5 hours.

I picked up yesterday, had to pick up wife in Orlando. Made it there and back 200 miles, and exact same thing, again.

Tech came onsite to reset codes this morning and I drove car home, but 140/200 miles? It will quit again.

Any hints from anyone? Toyota can't tell me anything helpful, $1500 + $395 in tow bills later

 

Not yet, but I am getting them when this is worked again next week. Another hybrid repair place said it showed low fuel pressure when it failed last, i.e. fuel pump. And it felt like a car that simply ran out of gas, then fumes when it died. But hybrids are not simple.

 

I've got $1K in it at this time, they want about $700 to replace the pump.
Is a 2014 Prius 4 in very good condition, new tires, all other service done, worth dumping another $700 in? But I can't sell w/o being honest about the problem either. It's in the computer.