The little toy cars can still initiate nostalgia in the older crowd, but Hot Wheels All Out misses that quality. Without it, it fails as a purely entertaining racer and gaming veterans will not like it. But as a budget title for young kids in the minivan ride to grandma's house, it has some tread.
It's all pretty repetitive and unexciting, and there's not really any motivation to keep running the same boring races over and over again on the same tracks. There are far better racers out there, even on the lowly GBA.