I guess it depends on what your expectations are before riding.
I rode it for the first time last summer.
I was expecting a loose representation of an actual "test track" that is used in automobile manufacturing with a bit of "Disney flair" added. My background is in automotive manufacturing and I have experienced these test tracks first hand, one at Chrysler and another at a GM/Chrysler/Ford supplier. I felt that the ride "test track" lived up to my expectation. Everything inside the ride from the visuals and props to the various courses the ride vehicle is put through, accomplished this mission. For anyone without an automotive background the ride gives sort of an inside look at how auto manufacturers challenge their new designs. I will add that on an actual track the vehicle spends a lot more time on each course than you do on the ride. Imagine sitting in a vehicle driving over the "german blocks" for 20 minutes or longer, shakes you up pretty good! An actual test track is rather bland visually, so by adding the highway scenes with an oncoming truck with a blaring horn adds to the experience, but won't be found on an actual track. My family enjoyed the ride and will ride again.