Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
When was the race that set the record for the Izod Indycar Series?

### Inputs:
table_name: table, columns: ['Record', 'Date', 'Driver', 'Time', 'Speed/Avg. Speed']

### Response:
SELECT Date FROM table WHERE Record = izod indycar series