Transporting Bike with Zipps on Roof Rack??

The wheel should be fine, but don't strap it down tightly (as R4YL said).  The bike will be held in place by the fork.  The wheel strap just kind of keeps anything ridiculous from happening.

Plenty of folks have done this with no problem(s) I have heard of ...

To tie the rear wheel down and ensure no problems with the rim, I have used an tube and cut it to down to ~20" length and then tied a 606 rear wheel down to the rack (being careful not to have a lot of slack flap about in the wind).  Worked just fine between Atlanta to Greenwood, SC and back for the SC HIM last year.

Not a problem to put it on the roof rack with the strap.  One problem potentially.  Your strap might not be long enough.  Test it out first.  I've seen dog collar's used because they are longer or just good ole velco straps.

But, I must say.  Even though I have a Thule roof rack, if I can, my bike goes in the back seat.  For several reason.  The most of which right now is fuel efficiency.  But if you have more than one passenger, then put it on the rack.

Let's visit the formula: Rock + highway driving speeds + carbon = bad

Just look at the dings in front of your hood...cay you say carbon crack?

Now let's visit the formula's proof:  roof rack + carbon = bad 

By they way....this formula and it's respective proof also hold true with carbon framed bikes. 

Anyone with a Felt DA and Zipp wheels can do whatever the F they want to do. 

Seriously, 100% of the damage done to my 10 year old steel frame was done by the stupid rack.  Of course it was a trailer hitch kindof rig but still...sucks.

But how many rock dings do you get high up on the side of your car?

I love that Felt, what a gorgeous bike!  Have fun on that thing.

I see where you're going since all debris comes from the front and the bike/wheels have a smaller frontal foot print...however, I've never put anything carbon on the outside of my car (roof or rear) simply due to what I mentioned above.

But I may be a little more paranoid than needed, hence, probabaly why I now race a Titanium tri-bike.... ha ha ha. 

carbon has no stretching qualities, it's an all or nothing material so I just can't stomach the thought of something hitting my zipps...but that's just paranoid Steve.