Quick, assemble a team of highly-trained nerds to help us use New York and Miami as new maps for Driver: San Francisco!
Just kidding, but I wouldn't be surprised if there's lots of stuff that is the same, I mean Driver 3 was basically based on Stuntman — don't forget that!

Textures would be interesting yeah. What I find strange is that there's this guy on Youtube who drives all the civilian and locked cars via Action Replay, and there's that Monster Truck with flames… You'd think that they just replaced the textures with the Big Foot textures, but apparently that Monster Trucks from the trailer is still in there.
Perhaps you'll find the textures of the beta cars seen in trailers too!