Apparently the XT's 5.5" display wasn't big, or bright enough, so now we've got the 6" Zumo XT2:
https://www.garmin.com/en-US/newsroom/press-release/automotive/cruise-to-bigger-adventures-with-the-rugged-zumo-xt2-from-garmin/
The zūmo experience
The zūmo XT2 GPS navigator provides...