I've been using Hollywood Express 3 Bike Rack since 2009. From my point of view it's the most cheap way to transport couple of bikes. It's price is about $60. Hollywood Express bike rack can securely carry two bikes with the weight of 15kg (33 lbs) each. I didn't even try to put three bikes on it, cause I think it's rather dangerous. Downhill bikes are usually much heavy than 15kilos that's why it's better to take off front wheel and other quick releasing staff as saddle with seatpost and pedals.
