Not a cat in hells chance of him [Hamilton] getting Marks car !!
ANYTHING is possible in F1.
Who would've thought that Alonso would be matched by a rookie, in 2007?
Who would've thought that Honda/Brawn would release a car which would be the class of the field, by a big margin, in 2009?
Who would've thought that Button would move to McLaren to go head to head against Hamilton, in 2010?
In 2009, who would've thought that Vettel would be a double Word Champ, within the next 2-3 years (and possibly triple World Champ within 3-4 years)?
Hamilton definitely has a chance of being at RBR in 2013, but he has to be intelligent in how he plays the game. Ideally, he needs to hire a decent manager/agent, with the sole aim of getting him in RBR for 2013. His current management (I think it's Simon Fuller's company), is absolutely useless. He also has to be resolutely focused on getting into RBR. If he is half hearted about it...it won't happen.
Alonso, Senna and Prost have all shown in the past that if you are determined to join a particular team and you show you are able to deliver the goods...you can get into the team of your choice. Obviously, Hamilton must dominate Button next year...he won't get an RBR drive if he continues to crash.