For the first time in 17 years a major championship features both of America's classic endurance races, the Daytona 24 Hour and the Sebring 12 Hour. That series is IMSA's United Sportscar, the result of the merger of ALMS and GrandAm. Back in January on GrandAm's turf the Daytona Prototypes ruled the roost, now we're in the back yard of the ALMS will the LMP2 cars reassert themselves? Will the GT classes again be ridiculously close? The top line LMP1 cars may have gone but with 64 cars in the field there are storylines aplenty.