On January 6, General Motors held a live web chat for Chevy Volt owners to answer any questions Chevy Volt owners may have about the retrofits being conducted to resolve the potential risk of delayed battery fire after severe side impact accidents. To date, said Chevy Volt Marketing Director Christi Landy, 7997 Chevy Volts have been sold and have racked up more than 20 million real world road miles. In all that time, there has been not a single incidence of the type of battery failure that resulted in a fire during the severe side impact test conducted by the…

In the effort to improve gas mileage and wear on tires, some consumers are filling their tires with nearly pure nitrogen instead of the standard compressed air. While tire makers say their tires are designed for plain air, others say nitrogen provides noticeable benefits. Let's look at the available data and see if there really is a difference.