I travel around the country with one of these. They cost $150 (found mine for $99). It's pay as you go, $50 a month, don't recall what the daily/weekly rate is. I dumped the Virgin product after they capped the data at 4gigs a month.
This product works at client offices, airports and hotels. It even includes a car adapter for those drivers suffering from Internet withdrawal on the road.
www.rover.com
Mike (about to buy a '00 base Boxster. Pray for my wallet.)