He most definitely has another vehicle, which is why its just been left for so long. And which explains why he refers to his 'beast' as the 'Ranger". Hopefully his other car is a little 2 seater, not big enough for the kids and bikes and sandwiches.
We have more than one car. Though not being a twat DP and I refer to them as the blue one and the black one. And when talking to other people, we refer to them simply as the 'car'.
He'll be needing the 'Ranger' soon enough when its his turn to have the kids again. But if he's an every other weekender dad we could be in for the long haul here.
If you can actually get him to agree a time. Could we all have your address OP so we can turn up en masse, line the side of the road and clap him sarcastically as he drives off? with possibly a few wanker hand signals thrown in.