"go there" = travel there. "get there" = arrive there.

I agree with the others. The meaning is the same. So when you hear someone say "get there" you can know that this means "go there." But I also think the native speakers will agree that when you speak, you can't always replace "go there" with "get there." For example, "I'm getting to the store in a minute. Do you want to come with me?" The use of "get" is just wrong there. It has to be "go." I can't explain why, but it's wrong! Therefore, my best advice is to use "go" when you are speaking and avoid using "get" because it can sound wrong in so many contexts.

"Hollywood is very beautiful. You can go there by car" "Hollywood is very beautiful. You can get there by car". These mean the same thing. It's your choice.

In my (Midwest American English) opinion Go there/get there and go to/get to can often be used interchangeably. In a statement, they essentially mean the same thing, but in a question they are emphasizing different ideas. "How do you go to work?" -emphasis is on mode of transportation. "How do you get to work?" -emphasis is on route or direction. "Get" can also be replaced with "arrive" in some cases. "I will get there at 8am/I will arrive there at 8am" "Go" could be talking about when you leave a place. "I will go to the store at 11am/I will leave for the store at 11am. In your two sentences, the first makes me think of an enjoyable road trip in my car, and the second makes me think of practical things, like time, route, method of travel. I really wouldn't think twice if we were having a conversation and you used either one of them.