We looked at the map and saw that between Kenora and Thunder Bay there is precious little in the way of population. Could it be that there was no way to track their position, because they were out of reach of any positioning devices? (towers? satellites? who knows?).
We finally tried to call them on his blackberry, but had to leave a message, as there was no answer.
Aha! Finally their icon reappeared in Thunder Bay, their destination for that day's drive. A few minutes later they called us, and confirmed that the problem had been in a lack of Rogers coverage over the area of their travel for that day.
Yesterday we were delighted to track their progress through Toronto, and safely to their destination in Niagara Falls.
New technologies: often marvelous, sometimes frightening.
On the home front: 7 pints of raspberry jam, 12 quarts of Red Currant juice, goodness to be consumed in the winter months.