Stand On Cycle Carriers
'Stand On' Cycle Carriers support bikes from below, they are the most secure way to carry bikes on your car.
The advantage of this type of carrier is that the bikes are securely support from below by the wheels.
The bikes are secured to the rack so that they can not move around so they won't damage your car.
The downside is that they are more complex, and therefore more expensive than 'Hang On' carriers.
They are also heavier and larger, so they are more awkward to store when not in use.