How big is your bike? I can fit my M or S size Giant road bike in there simply by taking the wheels off on the S and by tilting the bars a bit on the M (I no longer ride the M). On race day I have my bike, two sets of wheels, my huge gear bag, sometimes a cooler with 1-2 gallons of various water/gatorade type stuff, and my now wife in the passenger seat. Makes getting there half the fun.
I brought my bike to the dealership and said "If it doesn't fit I'm not buying it". It fit so I bought it.
For the price of that rack, you could almost buy a second hatch with glass, drill it out and mount what you need directly into the sheetmetal and metal structure under the skin. I've been contemplating doing that - then I could carry two bikes, 4 sets wheels, and still have the trunk empty.
cdr