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Weekly Recap: The implications of strong new car sales

New car sales are on a roll in the United States this year, and analysts are optimistic the industry will maintain its torrid pace. Sales increased 1.6 percent in May and reached an eye-popping seasonally-adjusted selling rate of 17.8 million, the strongest pace since July 2005, according TrueCar research. That positions the industry for one of its strongest years ever, as consumer confidence, low interest rates, low fuel costs, and an influx of new products propel gains. In addition to the positive economic factors, May also featured warmer weather across much of the US, an extra weekend, and it came on the heels of relatively weak April sales. Analysts suggest income tax refunds and the promise of summer driving and vacations also traditionally help May sales. "While 2015 will be one of the best years in the history of the US industry, in some ways it may be the very best ever," IHS Automotive analyst Tom Libby wrote in a commentary. "Not only are new vehicle registration volumes approaching the record levels of the early 2000s, but now registrations and production capacity are much more closely aligned so the industry is much more healthy." Capacity, an indicator of the auto sector's health, is also expected to grow. Morgan Stanley predicts it will eventually hit at least 20 million units per year, as many companies, including General Motors, Ford, Tesla, and Volvo are investing in new or upgraded factories. "The best predictor of US auto sales is the growth in capacity, and frankly, we're losing count of all of the additions – there's literally something new and big every week," Morgan Stanley said in a research note. Transaction prices, another telling indicator, also continue to show strength. They rose four percent in May to $32,452 per vehicle, and incentives dropped $10 per vehicle to $2,661, TrueCar said. "New vehicle sector and segment preference indicates consumers are confident about the economy and their finances," TrueCar president John Krafcik said in a statement. Still, Morgan Stanley noted the robust sales did little to immediately impact automaker stock prices and suggested it might be a prime time to sell if sales reach the 18-million pace. "Perhaps the biggest reason may be that investors have seen this movie before," the firm wrote.

Chevy reveals new IndyCar aero package

The IndyCar Series is not one that demands its participating teams and automakers to design their own chassis as they do in Formula One, but for this season, the organizers have opened it up to allow for custom aero packages. What you're looking at here is the new look of the chassis to be fielded by teams running under Chevy power. Based on the Dallara DW12 chassis – introduced three years ago and named after the late Dan Wheldon – Chevy's new package is designed for road courses and short ovals, with the speedway configuration to be revealed later. The kit features new wings front and rear and more sculpted side pods. It's also got new wedges at the back to envelop the otherwise open wheels that are a hallmark of Indy racing, a more streamlined engine cover and bigger rear bumper pods. The new package will debut at the Grand Prix of St. Petersburg that will kick off this year's championship in Florida on March 29, followed by the road-course grands prix in Louisiana, Long Beach, Alabama and Indianapolis before the new package needs to be ready for the Indy 500 late in May. Half of the teams on the starting grid this season will be running under Chevy power and are expected to use this new aero kit, with the remaining Honda teams slated to run a different package of their own. Chevrolet Debuts All-New 2015 IndyCar Aero Package Chevy-developed bodywork delivers improved aerodynamics 2015-02-17 INDIANAPOLIS – Chevrolet-powered racecars in the 2015 Verizon IndyCar Series will feature Chevrolet-developed aero packages. Chevrolet introduced the road course/short oval body design today at the Indianapolis Motor Speedway. It is distinguished from the previous racecar with new front wing elements, sculpted side pods and a new rear wing. A speedway configuration for the aero kit, designed for high-speed ovals, will be introduced ahead of its competitive debut at Indianapolis in May. "This is an important milestone in Chevrolet's involvement in IndyCar racing," said Jim Campbell, General Motors U.S. vice president of Performance Vehicles and Motorsports. "We focused on developing an aerodynamic package that delivers an balanced combination of downforce and drag, along with integrated engine performance. It's a total performance package." The new Chevy road course aero configuration delivers greater aerodynamic performance than the previous design.

Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.