Let her see the porsche video with the little boy dreaming about a 911...
Let her consider you as a little boy (that you -we- ARE in fact if you -we- want this irrational noisy little vehicle) and do hope to touch her mother's heart, that just wants to see you happy...
And, if she likes cars, let her testdrive it a while ...
This is not humor : it's the true way..!
And it works...