+ - Heins: BBM coming to iOS and Android->
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My roommate does the same in his Optima actually, I just picked SD because it seems to be the common choice among OEMs for nav storage these days and in my experience is more durable than USB drives.
I've killed a few USB drives in the course of normal use where while I've heard of them I've never seem an actual dead SD card. I'd expect the actual internal memory to be similar, so I can only imagine the difference comes from the physical form and possibly simpler interface.
And the hundreds of thousands of Chrysler MyGig systems with ordinary 2.5" laptop hard disks contained within are failing in massive quantities, right? Or any number of other manufacturers offering hard disk based storage in their entertainment system. Or the thousands of custom-built in car PCs rigged up by enthusiasts, until recently often equipped with full desktop disks for capacity reasons.
FYI, the "freezer trick" is a common way to coax some last remaining life out of a hard drive that won't spin up. They seem to like the cold, since one that doesn't work at room temperature in my experience has about a 20% chance of coming back to life if frozen. More than once I've rescued data with a USB cord running out from my minifridge.
Or we'll skip the hard drive altogether, SSDs are well under $1/GB for non-performance applications (which media storage in a vehicle certainly fits within). Since when did they care about vibration or the sort of temperatures cars are tested for? Hell, for the role a SD slot would be more than sufficient. Then not only is it practically indestructible media but it's entirely user swappable, allowing easier loading of content and trivial upgrades down the line.
Anyone who's used MyFord Touch or Cadillac Cue for more than a few minutes knows that the idea of these systems being heavily tested is laughable anyways. Supposedly old Sync was nicer and I haven't had any problems with Kia's Sync-derived UVO system, but I haven't used any of the others to really compare.
The unfacts, did we have them, are too imprecisely few to warrant our certitude.