I heard glance eats up battery
not really, on a lot of devices it can, but thanks to 925's OLED screen, the battery consumption is barely noticeable, OLED screens have the unique ability to turn off pixels when it needs to make the color black, which not only makes screens look incredibly better, but also gives the advantage of low battery consumption, basically with glance screen, unless you use a background, that small clock isn't going to eat much battery at all, I my glance set to interval eats up about 5% battery a day, when I had it set to peek it only ate about 2% battery a day, I'm guessing having it on always will probably eat around 10% battery a day
what about cases something that will not add to much bulk.
heres the case I use:
Nokia Lumia 925 Body Glove Fusion with DuraStand Case - White & Charcoal | T-Mobile
You can find thinner ones, but this is the thinnest one I could find that had a kickstand (which is something I've come to love and became a requirement in a case for me)
its not doing anything it's just setting there (Here Drive) how do you use it
in the bottom where it shows your current speed limit, you can press that bar and it will open a menu, to go somewhere press the "Set destination" button, follow the onscreen instructions and go from there