Is this a good idea for a book?

Sounds a bit like a book I once read. Predator's Gold by Phillip Reeve. It also took place in a post-apocalyptic world. Anyway, in the book, entire cities basically became moving vehicles. Some were bigger and stronger and some were weak. The big city was trying to find America or something - where the grass is still green.

Check it out.

BUT this idea is actually pretty genius. I like it and if you ever do write a book about it, I'd read it.

I would read it!

I think you should make it out of our galaxy if its so far into the future and make up planets, that would be awesome. I also think you should have three main characters, so you can change each chapter to their view of what is happening and make them come together towards the middle end.

I think if you really like it then just try to do it who knows millions may read but you will never know until you try i say go for it!

It sounds like a cool concept but I know the story will super suck.

Use likeable characters and a happy ending and it sounds great!

I think it sounds awesome! I would definitely read this book.

lol no its not related to other works because frankly this plot sucks

does not resemle to anything i have read and i do read frequently