12v Ebay Fridge review Portable 12 volt 7.5L food cooler Do they work for vans?

These things are all over ebay. Do they work?

http://www.ebay.com/itm/NEW-7-5L-12v-...



Specifications:

Capacity: 7.5 liters, holds six (4) 14 oz. cans
Overall Dimensions: 310 x 170 x 310 mm
Color: Blue
Power Rating: 37W
Rated Input Voltage: 12V
Single Radiator
Hot/Cold, on/off switch
Red/Green lights indicate warming or cooling status
Cools down from 18°C to - 2°C below ambient
temperature Warms up from 60°C to 65°C by set-point thermostat
Uses advanced semiconductors to cool and warm up
Full polyurethane-foam lining without CFC
Locking latch keeps your items secure and unit insulated
Operates on DC 12V (cigarette lighter in car/truck/vehicle boat ship)

Package Included:

1 x Mini Fridge
1 x DC Adapter
1 x User Manual