In my first post I asked if this was a wind up.
I have had two caravans and three tow vehicles, and as with anything in life when you try something new there is always a progression.
If your car can legally tow the caravan then you are off to a good start.
You say you will only be towing it 100kms.
That won't be a problem, provided you get the braking sorted out (does the caravan have electric brakes or override brakes?) get additional mirrors and maybe a weight distribution hitch if the bum drops under the load. Also check the towball download weight which is usually quite low on European cars - check your car manual. And finally check your car manual regarding other limitations in towing, my guess it will have a limit on speed.
So you get all that settled and off you go for a few days in your caravan and let's say you have a good time.
This is where progression comes in.
You now wish to have a better tow vehicle.
Your wife doesn't like the porta potty, she now wants an ensuite.
You want A/C and TV.
You go and look at some other BIGGERER AND BETTERER caravans for sale, they want to give you a good trade in price for your newly acquired tiny ****box of a caravan.
But it is only 2500 kgs.
Add your stuff - 300kgs
Two water tanks -200kgs
Suddenly you now need a tug that can legally pull 3000kgs.
Oh, why not go the whole hog and get a 5th wheeler.
Welcome to the world of caravanning, if you are not grey you soon will be.