Three-time Indianapolis 500 winner Dario Franchitti has been very impressed with how quickly Fernando Alonso has adapted to oval racing.
Alonso sailed through the mandatory rookie test last week as he completed 110 laps and clocked 222 mph, and Franchitti believes the Spaniard's quick learning bodes well for the end of the month,
"I was amazed, I thought he got up to speed incredibly quickly," said Franchitti at McLaren headquarters.
"I sat and watched the whole rookie test and I thought he did a great job.
"To drive an oval is a very unusual thing for a road course driver who has grown up driving on road and street courses, and Indianapolis is probably even more so a law unto itself.
"The good news is, there's a lot of days of practice. If it rains, that could change things a little but, but every lap Fernando's going to get is going to be helpful."
Franchitti also believes Alonso has a very strong support network that will continue to help him adapt to the new discipline.
"A plus point is that he's got great team-mates," added Franchitti.
"They're going to help him, which I think he will find quite unusual.
"You all want to beat your team-mates, but you all work together to beat the opposition because the cars are essentially the same and it's how your team figure out the small differences that can make the difference between success and failure."