Have any Touring Sports Hybrid owners come up with a better / cheaper solution to carrying four bicycles than Toyota's suggestion of paying £845 to have a bracket fitted to the car into which a Toyota 2-bike rack (£300) can be fitted, and then buying roof bars and two roof mounted bike carriers (a further £400?). I already own an excellent 4-bike tow ball mounted bike rack but apparently I'm not allowed to fit even a detachable, non-towing towball to a hybrid in case I try to tow with it!