There were a million different ways this film could have gone and, subsequently, improved. However, this "Carpool" runs out of gas early on.
Tom Arnold can be funny, I've seen him do it. And there are parts in "Carpool" where he is, in fact, funny. But the whole storyline is just a line of desperation on which this movie hangs situations that just don't stay up.
And what in all that is holy's name are actual actors like Paymer and Steiger doing here? They can be funny on occasion, but not here; you just spend your time scratching your head, wondering how bad they needed the money.
As it is, one long car chase, punctuated by the kids thinking Arnold isn't such a bad guy after all while dad Paymer insists they "stop being nice to the criminal" (okay, I liked that part).
Two stars. And if I never see Steiger dressed like a clown again, that's fine with me.