Way to get around the updates for PS3/Xbox360 is to get a wireless router and then when you park your car at home in the drive you can connect up and let it download its updates.
 
Way to get around the updates for PS3/Xbox360 is to get a wireless router and then when you park your car at home in the drive you can connect up and let it download its updates.

Depends whether you've got the a wireless adaptor in your console tbh. If you haven't then you're stuck with wired.

Also you're going to need some monster inverter to produce over 300W sustained from a 12v feed...