It seems that everyone, who comes to Zion National Park, has a picture of this tree. At least all of my friends and acquaintances albums on Facebook have one from this park. From April til late October you’ll have to use the shuttle bus to get around the park, but if you come in winter, there are not that many visitors and private vehicles are allowed in the park. Grand Canyon has the same system!
I saw Zion in my first grand road trip on the West coast, read more about it here.