Question: Was there a "winner" for the final race in London, or was it forfeited? As far as I could tell, the race was still going on when Mater took Lightning McQueen away to help figure out the lemons' plan involving him.
Question: How do the lemons discover Leland Turbo?
Question: The three Cars films establish that all biological creatures are just variations of mechanical devices. Yet in Cars 2, there is mention of dinosaurs. What exactly are "dinosaurs" in the Cars world?
Chosen answer: If you're taking it to that level, one would have to believe that dinosaurs to these characters would be primitive forms of their devices, evolutionarily speaking.
Answer: The "Cars On The Road" shorts reveal that there were indeed dinosaur-ified cars/trucks.
Answer: Probably dino cars. There was a Futurama episode where there was a robot dinosaur called the tricycle - tops probably something like that.
Question: What did really happened to Doc Hudson?
Chosen answer: It is hinted that he died off screen.
How though, because he seemed to be in perfect condition in the first movie.
Question: When they're in Paris, and the three-wheeler (I forget his name) sees them, he makes an attempt to escape. If he was on their side, why'd he try to get away from them?
Answer: There was another car with the three wheel car. He was probably just being incognito to help them. In other words if the lemons found out he was working for Finn, he would be targeted.
Question: With security guards all over the place, how do the lemons get agent Rod Redline from the party to their hideout?
Answer: The lemons may have taken Rod to their hideout without being seen.
Answer: They heard him recording the message to Finn and found his words suspicious.