In line with the inspiration for the question: Cars 2
I liked the first one and thought the second one was also lots of fun. I liked the visuals / in-universe elements, and thought it was decent for a kid's spy movie. It was one of my favourite family movies at the time.
I never got this either. My niece would rather run around and play games while it was on so we never really sat and watched it all the way through, but she would play it on repeat and I thought it was fun