Engadget

"I prefer using a GPS unit, not my phone, when I'm driving around LA. The best traffic I've seen is via Google Maps, since it shows surface traffic for streets in Hollywood. Navteq HD Radio maps (which is what I use now) doesn't show this kind of information: it's only for highways. There aren't any highways between Hollywood and Beverly Hills, but there's a ton of traffic, which you're blind to when using a standalone GPS. Is there an easy way to get surface traffic data on a GPS unit rather than forking out for a phone / tablet and $30/month data plan? Thanks!"