"With gas prices still above $4 a gallon, the number of people driving on the Massachusetts Turnpike continued to slide last month, according to figures released today by turnpike officials.

More than 800,000 fewer vehicles passed through tollbooths in June compared with the same month last year.

The 4.7 percent decrease, to about 16.4 million tollbooth transactions, comes after a 3.5 percent decline in transactions in May."
http://www.boston.com/news/local/breaking_news/2008/07/where_did_all_t.html