Goodyear this week announced it's developing a tire that automatically stays inflated to the proper tire pressure, thanks to an embedded miniature pump. The technology will help motorists save on gas and also will mean they won't have to change their tires as frequently, the company says.
If you're driving less in this time of high gas prices, you might be eligible to pay less for auto insurance with a new crop of pay-as-you-go plans. But these per-mile policies come with some drawbacks as well, and certain habits -- like driving late at night -- could disqualify you.
Panasonic is recharging electric-car company Tesla Motors with $30 million. The electronics manufacturer, which provides batteries for Tesla's cars, will now own 2% of its customer. The deal also puts Tesla back in the battery business.