2008 Porsche 911 Carrera Cabriolet on 2040-cars

Auto blog

Good Samaritan pulls key from hit-and-run driver

A man in England stopped a hit-and-run driver from fleeing the scene by grabbing her keys from the ignition. On February 13, Michael Scott witnessed a crash on a busy road in Birmingham, England according to the Telegraph. He watched as a Vauxhall Astra crashed into a Porsche right in front of his vehicle. At first, it seemed like the offending driver was going to stop, but she just kept going. Luckily, Scott had his dashboard camera rolling at the time. "I was shocked when the Astra driver didn't stop, and just carried on accelerating up the road," Scott told the Telegraph. "I thought the driver was trying to do a runner, so when the car in front of me moved off I managed to speed up and block the Astra in. Scott rushed ahead of traffic to cut off the Vauxhall in a turn lane a few hundred feet from where the crash originally occurred. The running driver then maneuvered around Scott, but was blocked by another car from making a clean getaway. Scott then nabbed the driver's keys to keep her from fleeing again. "I was in a rush so I couldn't stop, but I gave her keys to the Porsche driver and left," Scott told the Telegraph. "I contacted the police to let them know I had footage of the incident too." When police arrived they found both drivers were unhurt, though the Porsche will probably need some expensive repairs. The fleeing driver was charged with drinking and driving and is currently out on bail.

The pre-race and first in-race report from Le Mans

The 2013, 90th anniversary edition of the 24 Hours of Le Mans has begun, tragedy marking the opening laps with the death of Allan Simonsen. We're at the track now as a guest of Audi and plan to stay through the evening, and even we haven't been able to find out what caused the accident - the only video is from just after the incident, and beyond the statement from ACO there's been no more news. The Aston Martin in the LM GTE Am class and its all-Danish drivers had taken pole in its class and was one of the favorites to win.
The pre-race report will come first, and even thought we can't spoil the race because we're only five hours into it at the time of writing, we'll put all of the news at the end in case you don't even want the updates.
Or you can go straight to the high-res galleries above.

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.