I love all movies shot on location in NorCal, but Bullitt underwhelms. I can see how it was a pioneer in its day. Maybe with so many better chases that have come since, it just looks lame.
French Connection is awesome. Unbelievable (but true) that was shot in Brooklyn on an ordinary day with no prep and without the city's permission. It's impossible to imagine today.
The same stunt people who did that chase and Bullitt also did one in The Seven-Ups, a basically forgotten movie that looks and feels a lot like the one in French Connection. This was was shot on location in upper Manhattan.