I just recently received a Google Chrome CR-48 notebook. After loads of searching, I've learned that you can get to a vritual terminal by hitting CTRL>ALT>T This is big, since there is no file manager. Just a heads-up for all lucky owners!
EDIT: It looks like there are no usual commands with this thing.... just network stuff. Dang.
EDITx2: It looks like a fully-functional terminal is only in dev mode. That's the solution. Just switch into dev mode, go to CTRL>ALT>T and type "shell"