the hitch idea works, but i don't like the idea of having a hitch on the back of my car.
although, there ARE hidden hitches out there that you can buy.
my 4Runner has a Yakima hitch bike rack (just like the one in the picture)
http://home.attbi.com/~tstuff/wsb/me...2/site1014.JPG and I fould it much harder to mount the bike to the rack compared to the roof rack.
this especially true for my mountain bike, because it does not have the standard triangle frame.
I have to used an attachment that goes on the bike before I can mount it to the bike rack.
However, my friend's Del Sol has a hitch bike rack that solves that problem
this is because it has a long beam that the entire bike sits on.
it's bascially the combination of the hitch bike rack and my copperhead
I'll try to find a picture of it to give you an idea.
Strengths and Weaknesses.
-- roof rack --
-strengths-
"easy" to mount the bikes
does not block rear view
does not block the trunk's opening
keeps it high away from people who want to steal stuff off your bike
easy to disattach the rack from the car (just undo the clips and grab the both rods..then lift off the car, it takes only a few seconds!)
-weakness-
it's up high, you have to lift your bike in order to mount it.
the difficulty depends on how heavy your bike is.
it "may" damage your paint considering it is touching it.
your car is now twice as tall and you have to watch out for low garages and trees etc.
hard to assemble bike rack when you first get it
-- hitch rack --
-stengths-
easy to disattach the rack from the car - just remove the hitch bolt and the unit slides out
"easy" to mount the bikes since you do not have to lift as high.
-weakness-
blocks access to the trunk (you can lower the hitch rack, but now your bikes can hit the ground at an angle.)
blocks rear view
"harder" to mount the bike to the rack - depending on your frame size. Bascially you have to wiggle your bike into the holders and it's especially harder when you have more than one bike on the rack.
you have a hitch on the back of your car (or you can get a hidden hitch to solve the problem)
both systems have their disadvantage and advantages
i like the roof mounting system over the hitch.
if I can, i stay away from my 4Runner's Yakima hitch bike rack....I only use the 4Runner when I get a group of my friends because we can fit 6 bikes into the 4Runner....two inside and four on the hitch bike rack