http://www.rpg.net/reviews/archive/13/13772.phtml
John Gardner's Summary:
See my short, short version above. Vehicles suffers from a very few quirks such as occasional redundancy, a few too many plugs for Technothrillers, and the lack of a table to better explain the dogfight rules. In spite of these very minor flaws, Vehicles is what a sourcebook ought to be. The new rules rarely replace the core rules; for the most part, they make using the core rules more enjoyable (and streamlined) in their particular context (in this case, in a vehicle). Highlights include the plethora of statted-out vehicles, the dogfighting rules, and the Narrating chapter.
Go to the full review for more information.