http://feeds.newscientist.com/c/749/f/638484/s/434c4287/sc/15/l/0L0Snewscientist0N0Carticle0Cmg22530A0A820B10A0A0Ethe0Efour0Emain0Eroadblocks0Eholding0Eup0Eselfdriving0Ecars0Bhtml0Dcmpid0FRSS0QNSNS0Q20A120EGLOBAL0Qnews/story01.htm

Why are self-driving cars taking so long to get on the road? We reveal what’s slowing them down – and how to fix it

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