Rebellin e soci usavano una Scott(con una forcella diversa)
Ecco la spiegazione data da Scott a Ciclingnews:

Scott weighs in on Rebellin's bike
A couple of weeks ago we ran a little item on the bike Davide Rebellin rode in his amazing string of Classics victories this year, quoting a claim by Gerolsteiner's bike sponsor Wilier that it was a prototype. Quite a few readers wrote in to point out that the bike bore more than a passing resemblance to a Scott CR-1, and it seems that Scott has noticed this too.
Scott's European office recently put out a statement about Rebellin's bike, saying, "We at Scott became aware of Davide Rebellin and other team members' use of a Scott CR1 frame early in the season when we first saw the design in early season races. We were flattered that the riders so valued the properties of our product that they would be willing to race it competitively. At that time we decided internally that we would not publicize the use of the Scott CR1 frame in respect for Wilier's situation."
However, Wilier has earned Scott's ire with claims such as the presentation to Cyclingnews of Rebellin's bike as a Wilier proto, and a press release issued in March that said, "Rebellin has won the Amstel Gold Race using a "Team" full carbon frame that won't appear in the trade until next September and that will be presented in the upcoming trade fairs. With its 920 grams weight, the frame is the lightest in the professional scene today."
In its statement, Scott hit back: "Rebellin indeed uses the lightest frame in the pro peloton. The Scott CR1 size 56cm weighs 895g and is available today around the world via Scott and its distributors."
While there's been no official comment out of Wilier yet, Cyclingnews understands that Wilier is working on 2005 models with the same Taiwanese manufacturer that makes the CR1 for Scott. Any development project has to start somewhere and the jumping off point in this case is the CR1, as the bike already coming out of this builder.