Indycar specs:

Engine Size: 3.5 liters
Maximum Number of Cylinders: 8
Maximum RPM: 10,700 (with rev limiter)
Horsepower: Approximately 650
Turbocharging: Forbidden

Minimum Car Weight: 1,550 pounds
Forward Gears: 6

F1 car specs:

Engine Size: 3.0 liters
Maximum Number of Cylinders: 10
Maximum RPM: 20,000
Horsepower: > 770
Turbocharging: Forbidden

Minimum Car Weight: 1,322 pounds
Forward Gears: 7

Now which do you think is faster?