Forget the BMW and buy a mini-van. And don't think that you can leave it out in the driveway spotless and shining. Family cars don't look like that.

Buy a chocolate ice cream cone and put it in the glove compartment.  Leave it there.

Get a dime. Stick it in the CD player.

Take a family size package of chocolate cookies. Mash them into the back seat.

Run a garden rake along both sides of the car.

There. Perfect.