Which British driver held the Indy car title and the Formula 1 world championship title?

Nigel Mansell. He is the only driver in history to hold both the Formula One and Indy car titles at the same time. At the time he won the 1993 Indy car title, he was still 1992 F1 Champion as the 1993 F1 Championship was still in progress.

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Can a car with big tires at speed of 80 mph overtakes car with small tires at speed of 80 mph?

No because both cars are going the same speed.Changing the size of a tire effectively changes the gear ratio the car drives in. A larger tire will gear the car up and so it will have a higher top speed.

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When is the next Indy race in Australia?

Doesn't look like they will race in Australia in 2009. You can check the 2009 schedule here: http://www.indycar.com/schedule/2009_schedule.php

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Did roger penske racing have 363 pole positions306 major racing victories22 natchampionships using only mobil oil for the cars?

Actually, I think it's more than that. That commercial is fairly old, and in 2009 they already have one win in NASCAR. In 2008 they won the Daytona 500 plus another Cup race and the 12 Hours of Sebring. I don't remember how old that commercial is, but Penske is extremely good at winning races...a...

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Where ca you watch a mile car race?

An example for a one mile NASCAR race would be the Dover International Speedway in Dover, Delaware, United States aka the "Monster Mile".

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