[crzycicada]

Why not stick with the OnStar system? It's handy and doesn't require another gadget taking up room in your car. If you want an aftermarket GPS system, the Garmin is awesome but I can't speak for what will be developed in the future that would be more specific to a Camaro. If you don't want to stay with OnStar, I recommend getting a system regardless of the car type as I've taken mine on trips many times and used them in rentals. Just my half a cents worth.