Well, for the Pole Position, you have to go in the back and do the stupid lap dance thing. Just let it sit for about six minutes and then leave.
There is apparently nothing to tell you how long you have to stay there, at least nothing I've found.
And the ice cream truck will be in the doorway of the ice cream factory. If you load there, it won't be there. Grab a car and drive away for a bit and come back.