Minivans are not as fun to draw as cars. On various questionnaires I've seen, when cartoonists are asked what they most dislike to draw, the answer is often "cars", which I have to disagree with; I kind of enjoy drawing them up to a point. But minivans are too bland and amorphous in shape, just kind of rounded rhomboids with wheels. (The other subjects often cited as no fun to draw are "crowds", "machinery" and "horses' back legs" and I'll agree with all of those.)
On the other hand, it'd be fun to draw the strip in a Petey's Diorama style, and I might give that a shot. What would an autobio comic from Petey look like anyway?
A poster on GoComics asked where Petey gets all the shoeboxes for his dioramas. Strangely enough I had a small subplot about Grandma unloading a pile of shoeboxes on Mrs. Otterloop, enough to fill the back of the van, but I dropped it. Maybe I shouldn't've as it made for a nice bit of elaboration. God knows where Grandma got all the boxes; from a lifetime of buying shoes, I guess. And of course, she's a hoarder.