I been doing a lot of research here and online and am looking for a way to transport 4 bikes with my 2010 Prius. I have 2 kids, 10 & 12 so their bikes are fairly decent sized and since they will be in the car, loading bikes inside the car is not an option. Based on my research, it seems my only options are a roof mounted Thule or Yakima, but for $700+, it seems like a really pricey option. I was considering a hitch, but it seems like they are all Class I and not recommended for 4 bikes. Anyone have any suggestions or other options? Thanks in Advance.