I've got an Atrix 4g, and a Verizon air card that I use with my laptop. I'd like to eliminate the air card if I can get similar bandwidth from the Atrix Hotspot. (The thinking is that if I get an iPad, I can get the cheaper wi-fi only version and tether it with the Atrix.) I know tht achievable data rates depend on signal strength,etc. Anyone have an experience with the Atrix hotspot?