To add more US data: My friend just got back yesterday from a trip from California to Pennsylvania in her Edsel, using wireless communication all the way. She bought a Flying J wireless access card for $30 for a month, and all the motels she stayed in had free wireless access except the most expensive hotel she stayed in, which gave her free access after she protested.

She discovered that you have to confirm whether wireless access is available when registering -- some places with Free Wireless big signs didn't have wireless at all, they just left the sign up. Once she had this happen and she didn't stay in that motel, only to move to a motel nearby that didn't have a free wireless sign but did have free wireless anyway. In her experience, almost all the cheap motels she tried had free wireless.