Reno

AT&T has become the latest Internet service provider to test limits on bandwidth usage, with a trial this month of caps for subscribers in Reno, Nevada.

The company -- the largest Internet service provider in the United States -- said about five percent of subscribers use about 50 percent of capacity.

$1 Per Gigabyte

Tim Harrington sits aboard the express bus from Mason, Ohio, to Cincinnati, his computer propped in his lap. He logs on, picks through his e-mail and begins his workday during the 30-to-40-minute rush-hour trip.

His commuter bus and buses in more than 20 other cities now offer wireless Internet, according to an informal survey by the American Public Transportation Association (APTA).