Best camera for picture and video on a road trip?

I'm going on a road trip pretty soon, and I'd like to document the majority of it through pictures and videos. Other than vlogs and some pics I'll take with my iPhone, I want a very high quality camera that can be used for picture and video, has a very high storage capacity, considering I'll be gone for quite a while, and is at least somewhat compact; I don't want to lugging around some big camera thru all my journeys, especially since a lot of the videos will probably be taken while I'm driving, so something I can hold in one hand would be nice. Price is not really an issue.
I'll have my MacBook with me, so I'd like it to be compatible with iPhoto.

Added (1). A waterproof camera would be nice, but not necessary at all.

You can get a Canon t2i. Best among Canon's Rebel series.

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