Buy a cheap van between you, run it for the month and then flog it for £500. We’ve done this many times in the past when younger. Just pay for some half decent cover to.tow you to a garage.
If it totally dies then just fly home (never needed to).
Vans are brilliant for Europe,. You can sleep in them. They’re more secure than a bike rack, more stealth than a bike rack as well.
But an old.Pug Boxxer or Citreon Relay, get a long wheel, high top and then you can knock up a bed/shelf the entire length of the van to sleep on (imagine sleeping bags laid out like in a tent) and all the kit/bikes go underneath. If it’s just 2 of you you can even have different beds. They layouts are limitless.
As you’re not planning on keeping it and thus do not have to worry about it being practical for day to day life then a big cheap one would be ideal for you beeds.
I’ve picked up old Boxxers and Relays for £500-800 and sold them on for pretty much the same money. And being French the parts are easy to get in Europe (Sprinter parts are rather costly!!)