LA resident here for eleven years (coming from ATL which has its own horrible traffic and is worse by miles for bike commuting, fwiw).
> I visited the US recently and you can drive for 30 minutes in a car and you are still in LA, if you drive for 30 minutes in the Netherlands you're in a completely different city.
My not-so-pedantic comments to these facts are (a) LA is freaking HUGE (if ever fly into LAX at night, pay attention to when the earth becomes a solid carpet of city lights. It's a looong way from the shoreline). We aren't constrained by water on three or four sides like say, NYC/Manhattan or San Francisco.
And, (b), at LA's 101/10/405/surface street speeds, thirty minutes may only be three or four miles (or two, if you venture to travel at The Wrong Times), while you can get to one of the major secondary cities (Anaheim, for example) in about fifty minutes if you time it well.
So, while technically true, those points aren't representative of How Things Really Are, imho.
(me: exclusive transit/bike commuter here for 6+ years)