Look back in this thread, as there is a fix, I rebooted before I saw the fix and that worked for me.

You will also need to edit /home/user/.carman/carmand.conf and change the line gps=none to gps=internal before you reboot.

I installed Carman this morning (then rebooted!) at breakfast over tea and toast, and paired it with my odb bluetooth dongle, and it ran perfectly for the hour long commute to work.

Only issue is the onscreen overlayed switcher icon/button thingy does not work, so I need to determine what the keboard shortcut is to bring up the taskswitcher/dashboard.

Be nice if this could be looked at as an issue. Not sure where to post (if anywhere) as a bug though.