Exhibit A:

I have no words.
Exhibit B:
I have words, but none that can be repeated in polite company. Egads, man, the hoof! I don't even want to know what that is inside it - just tell me it's not the cake server, please. [shudder]Exhibit C:
"We are gathered here today to join this man, this woman, and this truck in holy matrimony..."Exhibit D:

For a "shotgun wedding" perhaps? (Ba-dum-bump!)
And finally, Exhibit E:
I'm actually a bit disappointed that I couldn't find a Nascar-themed wedding cake. Anyone have one to send me? C'mon: it'll be therapeutic!
Thanks to Chris M., Melody H., Jacy D., and both Anony M.s for their expert Wreckporting!