Oh you youngins....
You have to use reverse psychology on them.
"Honey, come to the races with me. I know its dirty and we'll be there all day, but the snack bar has great hot dogs and chips." "You could help me clean and prep my cars in between rounds, It'll be fun!"
"What?"
"You don't want to go?"
"Its my track friends huh? You don't like my track friends..." No?
"Is it me???" You don't like me anymore, you don't want to be with me..."
After that..... She'll understand.
