I don't need nevigation system in my Hummer. I still use the old fashion method, maps. In fact, I have the same LA maps for 20 years, they don't even have some of the newer towns. LA has a million freeways, going anywhere is a matter of lots of numbers and letters, keep on changing freeways. Take 73N, 405W, 55N, 5W, 57N, 60W, etc.. That is just to meet some friends for dinner. After maybe 100 trips to LA, I still do not know it well. My wife and I will plan each trip on the map, then the co-pilot or navigator will handle the instruction. When we hit a jam, there is always another freeway exit down the road, get off 5S, take 710S, change to 405E, then 73S. One thing confusing about LA freeways is that it doesn't use North, south, east & west that much, mostly the town in the end of that freeway, you would need to know in general where that city is. I know Santa Monica is on the coast northwest of LA, that is not the direction I needed to go. Example, 710 going south, it does not say South, but Long Beach, I know Long Beach is southward to the ocean.
You also have to watch out some LA freeways exits are on the left side, you never really know which side. Some exits sort of pops out before you expected it and some exits have sharp turns. Carpool lanes have 4 solid lines or barriers you cannot get out and had me worried all the way, and they have their own connecting ramps.
Navigation system may make it easier, but what's fun in it?
