I thought I'd share this as I know that others are having the same problem.
We like to fly to smaller airports of which most don't even have a courtesy car.
Even if they do, we can't count on that it's still available when we get there and they also usually can't be kept overnight.
To drive the last miles to where we want to go, we have two Dahon Uno folding bikes. While there are great, only one of them fits in the baggage compartment, the other has to go on the backseat. Loading the bike on the back seat is however a pain, the two bikes also take up most of the cargo space.
Electric scooters turned out to be too long, we therefore settled on a OneWheel PintX.
For now we just bought one, to see how we like it. The plan is however to get a second OneWheel.
The PintX has a range of up to 18 miles and a top speed of just under 20 mph. Other than that they have a bit of a learning curve, they seem to be a great solution for us.
They take up very little space, in fact ours even fits next to the folding bike into the baggage compartment.
The only real downside I see is that driving on public roads is in many areas tolerated but technically not legal, just like an e-scooter or an electric skateboard.
I attached a few pictures of the OneWheel in our baggage compartment, with and without the bike, as well as of my wife riding it.