2020 Porsche 911 Carrera 4s - Guards Red Over Slate Grey! on 2040-cars

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Jay Leno puts carbon fiber wheels to the test on a Porsche 911 GT3 RS

Jay Leno's Garage usually focuses on looking at cars new and old, speaking to their owners and then Jay taking a drive to see what he thinks. However, Leno throws his usual shtick to the curb this week to do a full product test of the carbon fiber wheels from a company called Carbon Revolution. If you're not interested in hearing about wheels for 18 minutes, don't worry. They get mounted on a Porsche and are tested back-to-back with stock wheels, and Leno takes the 911 for a track test, too.
While carbon-fiber wheels aren't exactly a new idea, Carbon Revolution's goal is to create a lightweight, one-piece product that can be mass produced. The company even claims that it already has a deal with an OEM automaker to offer them on a vehicle in a few years. The key to the technology is that it doesn't need an expensive autoclave to be made.
In the meantime, the company's carbon fiber wheels are available as an aftermarket option for about $15,000 a set, according to the video. They weigh in at about 15.5 pounds each and offer OEM-levels of stiffness, so they could cut some unsprung mass off of a performance car. Watch here as Jay and his mechanic Bernard lap Willow Springs and give their feedback about what they think of this cutting-edge technology.

Jack Olsen built one Porsche to do it all

Jack Olsen has built himself a lair called the 12-Gauge Garage, and inside that garage he built a lairy Porsche 911 nicknamed Black Beauty II. Although it looks like one of Stuttgart's models from the sixties or seventies, it is actually four decades of 911 gubbins from 1965 to 2000 thrown under one shell: the lightweight body is from 1972, the transaxle from 1977, the brakes from a 1986 Turbo, the engine from 1995, for example. It weighs 2,400 pounds and it's got 272 horsepower to get it going, but it's still a pure Porsche, Olsen saying, "If you stop thinking about what you're doing, it will remind you in very abrupt ways."
Olsen said the real point has been to have one car that does it all, so he does everything in his 911 from neighborhood runs to 7-11 to track racing - he loads the aero bits in the car and bolts them on trackside. And he says he'll never stop tweaking the suspension.
You can watch and hear the rest in Olsen's words in the video below.

40+ cars that barely avoid the gas guzzler tax

The Gas Guzzler schedule, with mpg ratings and charges that haven't changed since 1991, lays out which fuel-swillers owe what to Uncle Sam.
I started thinking about the "Gas Guzzler Tax" - considerably less well known as The Energy Tax Act of 1978 - when I was driving Dodge's new Challenger SRT Hellcat last week. Unsurprisingly for a car that can burn 1.5 gallons of gas per minute at max tilt, theoretically able to empty a full tank of premium in about 13 minutes, the Hellcat will be subject to the Gas Guzzler Tax schedule when it goes on sale.