Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Rd | Name | Pole Position | Fastest Lap | Winning driver | Winning team | Report |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Datsun Twin 200 | Johnny Rutherford | Unknown | Johnny Rutherford | Chaparral | Report |
| 2.0 | Indianapolis 500 | Johnny Rutherford | Unknown | Johnny Rutherford | Chaparral | Report |
| 3.0 | Gould-Rex Mays 150 | Gordon Johncock | Unknown | Bobby Unser | Penske Racing | Report |
| 4.0 | True Value 500 | Bobby Unser | Unknown | Bobby Unser | Penske Racing | Report |
| 5.0 | Red Roof Inns 150 | Al Unser | Unknown | Johnny Rutherford | Chaparral | Report |
| 6.0 | Norton 200 | Bobby Unser | Unknown | Johnny Rutherford | Chaparral | Report |
| 7.0 | Kent Oil 150 | Al Unser | Unknown | Bobby Unser | Penske Racing | Report |
| 8.0 | Tony Bettenhausen 200 | Johnny Rutherford | Unknown | Johnny Rutherford | Chaparral | Report |
| 9.0 | California 500 | Bobby Unser | Unknown | Bobby Unser | Penske Racing | Report |
| 10.0 | Gould Grand Prix 150 | Mario Andretti | Unknown | Mario Andretti | Penske Racing | Report |
| 11.0 | I Copa Mexico 150 | Bobby Unser | Unknown | Rick Mears | Penske Racing | Report |
Question:
What was Johnny Rutherford's fastest lap while Al Unser was the pole position?
Answer:
Unknown