The Utah Transit Authority (UTA) is experimenting with WiFi on busses. The move is an effort to attract riders. It seems to be working:

"Free Wireless Access keeps me riding the bus," a survey respondent said. "Though driving to work would get me faster, wireless access is an incentive to me to stay off of the road. This is the single best thing about riding the bus. Keep it UP!! Please!!!"

From Salt Lake Tribune - UTA plan will let riders surf Web while they ride
Referenced Mon Jun 11 2007 13:23:23 GMT-0600 (MDT)

I suggested a similar move for light rail 5 years ago when I was Utah's CIO. Glad to see it happening.