Recently I was told I was going to make my cousins wedding cake (thanks mom) any way, the wedding is a 3 hour drive from my place. I have made the cakes and all the details (gumpaste) that will need to be attached. I was thinking about ganaching the cakes here at home tonight, so they have a night to set then drive the 3 hours tomorrow and once I get there cover them in fondant and peice together as i normaly do it, what do you guys think? I can ganche them there but then I'm scared that they will not have time to set! I would hate to do this wrong and have a cake wreck situation in front of my whole extended family!

Go ahead and ganache tonight. Actually if your cakes have had time to settle you could go ahead and cover the cake in fondant and just decorate when you get there.

Thnks for the quick reposnce, sorry all the spelling mistakes! Can I buttercream the middles then ganache the whole cake?

Yes.