At the SEMA show in Vegas this week, Pioneer is showing off its next-generation all-in-one head unit: the Z1. It will combine all the usual high-end entertainment options, but what is most interesting is its navigation portion. This unit will run off an internal hard drive as opposed to the usual DVD. That means far richer map displays, interactive POIs, and a system that can learn and and come up with clever route options that take into account distance, posted speed limits, real-time traffic flow, and the kinds of trips you typically make. This will be the new modus operandi for all systems in this class, and you have to imagine that a day is coming when widespread penetration of these systems could radically redistribute traffic flow in our metro areas. The Z1 arrives in spring 2006.