Is there any way that I can set up my xbox 360 in the car

get X-zibit to pimp your ride

EDIT:

Yes, you need to buy a power inverter capable of supplying power to both your XBOX and your TV. The XBOX 360 draws around 200 watts, and many LCD TV's these days draw around 30-40 watts. Both these numbers are RMS, while inverters are typcially sold labeled as Peak, which is double RMS for the same value. So search for an inverter with a peak power of 500 watts or an RMS of 250 watts, or more.