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

### Instruction:
Which driver had a grid of 18 with 68 laps?

### Inputs:
table_name: table, columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']

### Response:
SELECT Driver FROM table WHERE Laps = 68 AND Grid = 18