Marchionne, speaking on the sidelines of the opening of a Maserati dealership near Toronto, said he had met with Apple Chief Executive Tim Cook and Tesla CEO and founder Elon Musk, among others, on the trip, during which he also rode in Google's self-driving car.
"I'm incredibly impressed with what that kid has done," he said, referring to Musk.
With regard to Apple's Cook, he said: "He's interested in Apple's intervention in the car, that's his role." Marchionne was not more specific about Apple.
Sources have said Apple has been developing its own electric self-driving car. The company has been open about wanting to integrate its core iOS software into autos with a system called CarPlay, which allows drivers to access information on their iPhones without taking their hands off the streering wheel.
The Fiat chief declined to elaborate or describe the meetings in any more detail.
Various automakers have been eyeing potential collaboration with Apple and Google even as they view their efforts to develop electric and self-driving cars as a potential competitive threat.
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It is less typical for major automakers' CEOs to meet with their counterpart at Tesla, which has not collaborated much with established manufacturers.
Turning to Fiat's planned initial public offering of 10 percent of sports car maker Ferrari, Marchionne said it was on track to happen in the third quarter.
He also pledged that Fiat Chrysler would make a stronger entry in the realm of luxury sport utility vehicles.
"When I see a Range Rover on the street, my blood boils, because we should be able to do a thing like that, and we will," he said.