i am in the same boat as you. the one thing that bothered me the most was having to take my eyes off the road.
haven't gotten the new system up and running yet, but here is a picture of the space nav:
I've been using centrafuse but i think RR is going to take its place
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New System in progress:
M10k
Phaze TD1500 ~> Dynaudio MD130
Phaze TD1500 ~> Seas g18rnx/p
Zapco Ref 500.1 ~ 12" tc-9
Behringer DCX2496 ~ Envision Electronics psu
Transflective Xenarc
My Car Pc Install