For years I have used an excellent roof rack system on my cars, this however is a substantial improvement. I can mount the rack on the car in under 5 minutes with the single bolt and then easily and safely put the bicycles on (as can my 5' 1 wife). The lock on the bolt and the co-keyed integrated cable lock are nice added features. Although it seems that it would be very difficult to steal the rack, the cable lock would stop a casual thief although not someone with bolt cutters. Having the entire bike mounted on the rack including the front wheel frees up cargo space for trips.