At the begining of this movie is very good. The story to the ending is building-up. And I'm hoping the end will reach the climax but it failed. Instead, it ends with the story that don't matter to what's really happening.
Some of the story still unclear, like the animals suddenly acting wierd, And who control the Tesla cars and who behind this chaos. Also one of the guy knew about to happened. So He came prepared with all he needs.
This remind me of a book series by William R. Forstchen One Second After. This book is better than this movie for sure.
I hope there will be part II, but overall I enjoy the movie. Is just the ending sucks.