I was testing the latest version of modrana extensively on the road today. It worked surprisingly well. Didn't have problems with downloading new tiles on the fly and keeping direction.

The biggest problem was the GUI rotation is not working. No matter, if set to automatic, portrait, or landscape, it was landscape. Which is a problem when driving, as you want to see far ahead, so you should be able to set it to portrait.

Am I right in assuming that this feature is not implemented yet and just has an options menu entry prematurely. Or is there a problem?