"We enjoy every win...we haven't made that much of a deal (of the unbeaten run)," Ponting told reporters after his team went 4-0 up in the series with a 67-run triumph on Saturday.

"But I told the guys this morning that we can use it as motivation for the rest of this series. If we keep thinking about that record and wanting to stretch it, then I'm sure we can keep playing well."

Maintaining the unbeaten record through the recent World Cup in southern Africa was a special achievement, Ponting said.

"Looking back to the whole World Cup and some of the things that happened before, and during, it was an unbelievable effort for us to come through undefeated and to keep it going," he said.

"It always feels good in this team and this squad. We have guys who love playing cricket for Australia and try and improve in every game.

"A clean sweep is possible if we are good enough and keep trying to improve," he added.

The tourists produced their strongest batting performance of the series on Saturday, Adam Gilchrist (84) and Michael Clarke (55 not out) top-scoring in a total of 286 for five.

"With us being 3-0 up, I thought we might have been a bit lazy today. But that's the exact opposite of what we were," said Ponting.

"We were very smart, very switched on, and we played a very good game of cricket."