Lotus owner Gerard Lopez says Kimi Raikkonen "has enthusiasm and desire" which allowed him to be immediately competitive again in Formula One.

Raikkonen's laid back approach to the sport and dislike of sponsorship and media commitments raised questions over whether he would remain motivated when returning to Formula One at the start of 2012. However, an outstanding season last year saw him finish third in the drivers' championship and win in Abu Dhabi, leading Lopez to admit his pleasure at silencing the doubters.

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