St Petersburg is the third new city in PGR4, and possibly the most unusual of all the new locations. Why is this you ask? Two words: humpback bridges. The city itself actually spans several islands, with canals and rivers criss-crossing between them. This not only sets a suitably impressive scene, but it also allows some daredevil racing across raised bridges and arches. There has never been an opportunity to catch so much air in the PGR series since San Francisco way back in the days of Project Gotham Racing 1.