its not vw but...
ive got an APC backUPS pro 650 Uninteruptible power supply for sale.

its in excellent condition, holds 30 mins of charge, comes with all software.
i bought it 2 years ago when i was living in a flat and found out (the hard way) that i couldnt use my washing machine as well as my computer at the same time due to microcuts in the power (and wasted about a week in rendering all up!)

Its perfect for workstations, gamers, if you leave your computer on all the time or if you just have lots of stuff on your machine that you cant afford to lose.

i no longer need it because ive got an apple and a house with good wiring!!

i paid over $600 for it then, im looking for $150 for it now. I can ship it, but mind you it is very heavy so it may cost a bit. U2U me if you are interested.