1. /Geek off/Someone's got to come up with really compelling reasons for me to upgrade a satnav. I can see the value in speed cameras, and more accuracy and stuff like that, and maybe some interface stuff, but what else is new?

/Geek on/Relatedly, am I the only one who is repeatedly amazed at just what a technical marvel the satnav is? Apple gets bigged up all the time over the iPod and iPhone, but the satnav is an extraordinary combination of really smart technologies.