New Porsche 911 Turbo gets a bigger engine and cranks out 500 hp

There are plenty of good reasons to go to the Frankfurt motor show in September, but this seals the deal--Porsche will use the show for the rollout of the new 911 Turbo in coupe and convertible versions. Porsche on Friday gave us photos and details on the newest 911. Here are the high points: -- New 3.8-liter flat-six engine rated at 500 hp.

Arizona auctions: Early days filled with optimism

The sun kept shining--both as a metaphor and in reality--while the cars were selling at the Arizona auctions. As of late Thursday, Barrett-Jackson had completed three of its six days of sales. Preliminary numbers assembled by on-site reporters indicate total sales of $20.2 million at the halfway mark, with 100 percent of the 656 cars on offer sold.

Hankook tire exec calls for global campaign to point out dangers of low tire pressure

Anyone driving a car today has certainly heard about the dangers of drinking and driving, and the use of a cell phone and texting while driving. Seung Hwa Suh, vice chairman and CEO of Hankook tires, is hoping more drivers will pay attention to the dangers of low tire pressure and driving. At The Tire Society's 29th Annual Meeting and Conference on Tire Science and Technology, Suh proposed that all tire manufacturers "jointly develop a global campaign for educating consumers about air pressure and the overwhelming benefits that we can all enjoy if we simply maintain proper inflation," he said.