Pacific Drive is a game about about exploring and upgrading with a car in a chaotic world gone wrong.
The map you drive through gets progressively more chaotic as anomalies and storms interfere with your exploration, eventually resulting in a radiation storm to force you out one way or another.
The nugget of idea it is very solid, and this could probably have been a great game if they had figured out a decent story to tell with it, and made the map a little ... more ... meaningful? The story delivery was all through the radio and various tapes you would find somewhere in the world, and honestly was a bit ham fisted - drive to these places and flip some switches to stabilize something. I'm being both sarcastically vague and 100% accurate.
I didn't have anything more to unlock or a reason to play beyond the credits rolling when they did. Because .. I drove somewhere and flipped the switch to stabilize something.