Contrary to the news reported after the first failure (400 mi), the most recent news (second failure at 600 mi) from the dealer is that the pump itself is fine. Something in the electronics caused it to shut down. After the dealer trundled it back to its shop on its flatbed, the car apparently started without hesitation.
No failure code in the computer when they checked.
I drove VW's for 11 years in the 70's and early 80's. Restored a split window '67 bus. Standing by my dead Rabbit on a rural highway at 1 AM on a 1982 night cursing the beast, I swore I'd never buy another VW. Twenty three reliable Japanese years later I break my oath and three days later I'm standing in the rain again.
VW's. Can't live with 'em. Can't live without 'em.
I'll check the thread. Thx for the lead.