If you own a smart phone you already have one.I still refuse to have a GPS device.
Plan a trip, I'll study the maps, note turns from one major hwy/towns to the next and take that with me.
The US Army spent a lot of money teaching us how to read maps and navigate the land.
I can't see wasting the taxpayer's money by throwing all that away.
Plus, I'll be able to sell my skills to the highest bidder when all the satellites go dark from solar flares.
I figure there would be worse things than driving a bus of lost people...