3G Tethering Rocks
I'm sitting in my car in downtown Ottawa listening to streaming Internet radio on the iPhone. 64 kilobit streaming and it sounds great. I've also got the Mac connected via Bluetooth tethering, and surfing the Internet over the same wireless Internet connection.
The Internet feels fast. Fast enough that if I didn't know it was wireless I wouldn't be thinking "hey this is slow". It's low latency enough that surfing is pleasant. The Rogers speed check page rates my connection at 831kbps.
And the speed check didn't mess up my Internet Radio. I'm impressed.