There are several heated steering wheel covers available that might fit your 2008 model vehicle. Here are a few options:
Zone Tech Car Steering Wheel 12V Heated Cover, this is a classic black premium quality ultra comfortable 12V vehicle heated wheel protector.
Heated Car Steering Wheel Cover, this is a 15" inches comfortable car steering wheel heated protector cover, which provides quick hand warming, comfort, and is non-slip.
SEG Direct Heated Steering Wheel Cover, designed for a steering wheel size of 14.5-15 inches and made with cloth materials. This steering wheel cover comes with a 12-volt quick heating coiled cord and you can easily plug it into your vehicle’s lighter.