Sorry to hear about your troubles.

I had a similar symptom when I first bought mine. Driving down the freeway the entire VX just went black. It was like someone just pulled the plug on me and I coasted to the side of the road. Restarted and everything was fine. About a week later at a McD's drive through, it happened again. This time I couldn't go anymore than about 10mph at around 3k rpm... pulled over shutdown and restarted, and everything has been fine since then...

I wish I knew what it was that caused this, but it has been 3 years since that incident...

Good luck on getting her back up and running. Makes me worried knowing that our VX's are having these random problems, even when we do so much to keep her maintained.