Fernando Alonso, left, has now twice been beaten to the F1 championship by Sebastian Vettel -- who is widely rumored to be his teammate at Ferrari come 2014. &quot;When you get two No. 1 drivers together with no team rules, then the sparks can really fly,&quot; Tu says. &quot;It's rare for them to be good mates. They may get along, they may trust and respect each other in a professional capacity, but hanging out is a different issue.&quot;
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