http://www.zdnet.com/blog/hardware/why-my-smartphone-hasnt-replaced-my-in-car-gps-receiver-yet/13472 Almost every smartphone comes with a built-in GPS receiver and mapping software (either pre-loaded or available as an optional purchase). Does this mean that the days of the in-car GPS receiver are numbered? Over on Twitter yesterday I had a bit of a conversation with my ZDNet blogging buddy and mobile gadget übergeek James Kendrick about in-car navigation on Twitter (@jkendrick). We got around to talking about htis because of Dwight Silverman’s account of his summer vacation where he talked about using his smartphone for his road trip. I was surprised to find that Kendrick had replaced his TomTom with a smartphone over two years ago and instead relies on his smartphone to get him from A to B. He’ll tell you why he prefers this over on Mobile News - if you’re planning a road trip this summer and don’t know whether to leave your in-car GPS receiver at home and rely on your smartphone or not.