The first sign of possible inflation was a 10.2 percent surge in the money supply for May.
It was the biggest advance since a 1.1 percent surge in October.
The stock jumped from $16 a share a month ago to a high of $19.50 last week, a 22 percent surge.
Some stations will see a 25 percent surge in traffic, he said.
It was the largest advance since a 3.5 percent surge in March 1992.
Though that would still be considered a huge increase at nearly any other time and place, it's down from the 50 percent surge in 2003.
That compares with a 27 percent surge in the first quarter.
There was an unusually strong 5.1 percent surge in October commercial construction.
It had 18.6 million unique visitors in April, a 67 percent surge from a year earlier.
The latter group, however, enjoyed a 1.9 percent surge in the first quarter.