Speedtest from the CLI

The following alias that I have setup on my machine is really nice for running a speedtest directly from the CLI with out having to use your browser. I have matched up the results with various online tests and it seems to match up almost perfectly with what they display.

alias speedtest='echo "scale=2; `curl  --progress-bar -w "%{speed_download}" http://cachefly.cachefly.net/10mb.test -o test.zip ` / 131072" | bc | xargs -I {} echo {}Mb\/s'