As you saw from the gallery of 25 awesome cars at this year's Paris Motor Show, the past few days have provided an abundance of debuts, previews, concepts, updates, and refreshers. Basically, if you didn't have something to show, nobody was paying attention to you. Instead of you guys going through multiple blogs trying to find out what's really important, we figured we'd condense the most important lessons we learned into a simple post. Click through to read about the world's first production hydrogen car, the McLaren P1, the Ferrari Enzo successor, and why the wagon is making a comeback. Here are 10 Things We Learned From the Paris Motor Show.