1975 Porsche 911 959 on 2040-cars

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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.

Jaguar F-Type squares off against Porsche 911, Aston V8 Vantage with Chris Harris

Chris Harris is back on the job, taking on really really difficult car questions like: Which enormously sexy and good-to-drive, high-performance convertible is the top of the heap? As one of the hottest cars in the luxury space right now, the Jaguar F-Type S is, of course, in on the action. Competition comes in the form of the Aston Martin V8 Vantage Roadster and the Porsche 911 Carrera S Cabriolet. Sun-loving CEOs who despise test-driving need look no further.
Scroll on below for a fully featured (with a running time of more than 20 minutes) comparison video. Harris does his best to entertain - in a typically nitpicky and made-up-British-words fashion - and the moving pictures are lovely to look at. Kick back, pour a pint and get your weekend started off right.

If your TV rats you out, what about your car?

Vizio, the TV manufacturer, recently had to pay a $2.2-million fine to the FTC recently because it was discovered that its sets were collecting data about viewers' watching habits and then using the information for its own benefit. Last year, it was revealed the Samsung smart TVs were busy listening to what was being said, even if the conversations in question had absolutely nothing with switching the channel away from the Matt LeBlanc Top Gear. Nowadays, auto manufacturers seem to be tripping over each other pointing out that they offer Apple CarPlay and Google Android Auto. And more recent phenomenon are announcements—from companies including Ford and Hyundai—that they are offering Amazon Alexa capabilities. You talk. It listens. In late January, General Motors said it is releasing a next-generation infotainment software development kit (NGI SDK) to software developers to write apps for GM cars. The NGI SDK includes native Application Program Interfaces (APIs) that allow access to expected things - like oil life and tire pressure and whether lightbulbs are burned out - but unexpected things, as well. Like the presence of passengers in the vehicle. When your TV set is ratting you out, isn't it likely that your car will? In making the announcement of the NGI SDK, GM pointed out that it has the largest connected fleet on the road, some 12-million vehicles. The company also noted: "From 2015 to 2016, GM has seen data usage by customers increase nearly 200 percent. Mobile app use for GM vehicles also hit an all-time high in 2016, with more than 225 million interactions." Is it not plausible that they know more those interactions than simply the number of them? GM's privacy agreement is like most privacy policies, which boils down to: You use it (the device, software, etc.), you potentially give up a portion of your privacy. While on the subject of apps, coincident with this year's CES, Subaru announced that it has added eight cloud-based apps to the STARLINK multimedia system in the 2017 Impreza. Some are familiar, like Yelp. Some are a bit narrow in focus, like eBird, which was developed by the Cornell Lab of Ornithology for birdwatchers. And one ought to give a bit of pause: RightTrack. According to Subaru, "RightTrack Test Drive from Liberty Mutual Insurance monitors driving habits and provides customers with tips on driving safer to help lower their insurance rates and improve their safe driving skills." Or said more simply: You drive. It watches.