Trouble on my commute this morning

This morning on my drive to work, my early S60 (P110xx) just decided to quit driving on me. Just about 12 months ago, I had a very similar occurrence. Just like the last time, alerts flashed up, the gear selector indicators turned red, and the car had all functionality except applying/absorbing power. After about 20 minutes and speaking with roadside assistance, who dispatched a tow truck, the alert went away and car could be driven again. Since the tow truck was over an hour away, I decided I might as well continue on to work. I continued driving for about 15 minutes or so, when again, the car decided to disable driving functions. About 20 minutes later, voila.... I could drive again. Now about 2 miles away from work, I continued again and quickly receieved a "reduced power" message. Fortunately, I was able to limp into my workplace and had the tow truck pick the car up here.

The car has now been towed about 150 miles to the nearest service center, and I await the findings.