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Race Recap: 2015 US Grand Prix was wet, wild, and historic

Hurricane Patricia made landfall in Mexico this weekend, and made her presence known throughout the South. For two of the three days of the grand prix weekend it rained non-stop in Austin, so badly on Saturday that qualifying had to be postponed until Sunday morning, and then it only stayed dry enough to conduct the first two sessions. At the end of a tricky, slippery Q2 Nico Rosberg had put his Mercedes-AMG Petronas on the front row, one tenth ahead of teammate Lewis Hamilton. The German had done the best he could to keep his hair-thin chances of a World Championship fight alive. Daniel Ricciardo lined his Infiniti Red Bull Racing chassis in third ahead of teammate Daniil Kvyat, both drivers having moved up a place because Ferrari driver Sebastian Vettel took a ten-spot grid penalty for using a fifth engine and dropped to 13th. Continuing the two-up theme, Sergio Perez and Nico Hulkenberg were fifth and sixth for Force India. After that came variety: Felipe Massa in seventh for Williams, Max Verstappen for Toro Rosso in eighth, Fernando Alonso looking good in the rain for McLaren in ninth, and Romain Grosjean for Lotus in tenth. When the lights went out, Turn 1 set the tone. Pole position is on the outside line at Circuit of the Americas, and Hamilton had got himself far enough under Rosberg by the time the two got up the hill that Rosberg had to stick to the outside through the corner. At the corner exit Hamilton used the entire track, pushing Rosberg wide, their cars touching. As Rosberg left the track and dropped back to fourth, Hamilton radioed to the team to say the contact was unintentional. The two Mercedes' and two Red Bulls animated the front. Rosberg passed Ricciardo at the end of a Virtual Safety Car period employed to let the marshals clean the debris at Turn 1. Kvyat started chasing down Hamilton until the Russian ran wide and let Rosberg and Ricciardo through, then Rosberg ran wide on the next lap to let Ricciardo through. On Lap 15, Ricciardo passed Hamilton through the esses to take the lead. After the first round of pit stops the Aussie still had the lead, followed by Rosberg, Kvyat, Hamilton, and Vettel. Then Rosberg got around to take the lead and Vettel closed in on Hamilton as the Brit duked it out with the Russian. Rosberg showed excellent speed, building up a nine-second gap on Ricciardo, but a Safety Car period erased that when Marcus Ericsson had to park his dead Sauber on the inside of the track after Turn 10.

A look inside Infiniti's variable-compression engine

We're sympathetic to anyone who had trouble understanding what's going on with Infiniti's new variable-compression engine. While we got a full tech briefing on the novel VC-Turbo back in August, the visual aids were lacking. The cutaway engine Infiniti brought to the Paris show fixes all of that. You can thank the little green and pink lines on the cutaway for making the whole idea a little more clear. Click through the gallery to see two lines – one green and one pink – that represent the different strokes allowing for different compression ratios. Remember, the compression ratio is the amount of volume in the cylinder on intake compared to the amount at the end of the compression stroke. Leave more room at the end and you lower that ratio. The length of the stroke doesn't change with this system, but where it sits along the cylinder does. Hence those two lines. The variable compression ratio allows this new turbocharged engine to maximize fuel economy when the turbo isn't needed by raising the compression ratio. It will see its first use in the next Infiniti QX50 crossover, previewed by the QX Sport Inspiration concept that's also on display in Paris, and has performance targets of 268 horsepower and 288 pound-feet of torque. After, it will migrate to other Infiniti and Nissan vehicles, with transverse front-drive-based applications first in line. Eventually, it's likely to completely replace Nissan's corporate 3.5-liter V6. We'll be poking around the engine a little more in Paris today to try and get some more info. For now, enjoy those cutaway images and those friendly little lines. Featured Gallery Infiniti VC-Turbo engine cutaway View 14 Photos Paris Motor Show Infiniti Nissan Technology Emerging Technologies engine 2016 paris motor show

Race Recap: 2015 Hungarian Grand Prix is Magyar for 'What a race!'

Every driver on the Formula 1 grid dreams of taking home the silverware, but only one driver each year can do it. Barring disaster in 2015 it looks like it's going to be Lewis Hamilton. The Brit has been so dominating at the front of the grid on Saturday, we can't see how he'll miss out on winning the second annual FIA Pole Position Trophy. That's the accolade introduced last season in another manufactured attempt to give drivers something to work for on Saturday, since the FIA felt leading into the first corner didn't have the pull it used to. Hamilton took his ninth pole of the season in Hungary for Mercedes-AMG Petronas with a crushing lap that put him almost six tenths ahead of his teammate Nico Rosberg in second. All Hamilton needs is one more spot at the top of the grid this season, and he's the Pole Position trophy winner. Thrilling stuff. Behind Rosberg the gaps stayed smaller, Sebastian Vettel in the Ferrari a little more than a tenth behind Rosberg, Daniel Ricciardo in the Infiniti Red Bull Racing less than four one-hundredths behind Vettel. We feel almost as vexed watching Kimi Raikkonen as he feels driving – he's finally got a good Ferrari, now he can't get a good weekend. The front wing broke on his car in Free Practice 1, then a water leak in Free Practice 3 robbed him of setup time on the soft tire. He lines up in fifth about two tenths behind Ricciardo. The slow, tight Hungaroring didn't agree with the Williams chassis, Valtteri Bottas the first of the Grove team drivers in sixth, his teammate Felipe Massa two places back. Between them is Daniil Kvyat in the second Red Bull in seventh. Teenager Max Verstappen put in a good showing in the Toro Rosso to grab ninth, while Romain Grosjean in a wriggling, squishy, sliding Lotus classified his appearance in Q3 at all as "a miracle." As for the race that followed, we don't expect to see another like it for a long time – it was the real thrilling stuff, one shock after another. The drama began after the first parade lap, when Felipe Massa lined up out of position and the start was aborted. The drivers did another parade lap, then lined up with everyone in place. Mercedes got swamped as soon as the lights went out. Vettel ran around both of them and led the race into the first turn, Raikkonen had come from fifth to third by Turn 1, then got the inside line on Rosberg through Turn 2 to take second place.