They See It. They Like It. They Want It. They Rent It
nytimes.com
nytimes.com
Fundamentally, this is a sign of the times: creative schemes in order to make it possible for people to over-leverage themselves into living an amazing life well beyond their means. It's not going to pan out well for the people who do this, I fear, but there will be no articles on them, no warning to people on the behalf of the New York Times, because fundamentally few people have pity for someone who spends lavishly and then finds themselves a pauper.
You still will probably run into trouble with those older kids if you ever go to the beach. Yes, you can minimize the impact of the sand, and vacuum the car afterwards, but those are all costs, and they incur to your time.
YMMV.
Dogs track mud into and stink up cars. I once lived with a dog that liked to drink seawater when taken to the beach and would have diarrhea 15 minutes later like clockwork. The first time the owner took him home from the beach in his leased car, he was in for a big surprise.
Also, juice is basically just soda. All sugar with very little redeeming value.
You'd also have to diaper kids for years after you'd normally consider them potty trained. Small ones don't plan ahead, don't tell you in advance, and aren't as determined to hold it as you might be.
You'd also need to have something to clean dirty hands.
My car is nasty. The seats are brown with aftermarket goo. This is how it is when you must cooperate and compromise with other people.
Not to mention that avoiding trash hardly seems like "a strong argument for a second car."