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Running flat out: BMW is a leader in pushing run-flat tires

BMW is getting ready to launch its next-generation compact SUV, the X3, and it will ride--as most BMWs and Minis sold today--on run-flat tires. Of all the companies producing cars today, BWM has embraced run-flat technology like no other. Chevrolet with the Corvette, and some Lexus models, among others, use run-flats in certain applications.

Tokyo Auto Salon pits performance autos against hybrids

The world's other big January auto show, the 2010 Tokyo Auto Salon, opened its doors to tuner enthusiasts in mid-month with a record 402 exhibitors. The Auto Salon fuses numerous styles, but the overriding theme this year was hybrid cars, with customized Toyota Priuses and Honda Insights at every turn. Good old-fashioned engine tuning is alive and well in Japan, where even new sports cars are being heavily modified, with cars such as the KRL Mitsubishi Evolution X and the HKS Nissan GT-R both boasting in excess of 600 hp.

Volvo cars will be able to tell if you're driving tired

Volvo is currently testing in-car sensors that can monitor driver alertness -- ones that can determine if the driver is becoming tired and inattentive. A number of simple systems that basically generate warnings after a certain period of nonstop driving are now available in cars. They take into account the average speed and time elapsed since the vehicle was started.