You could always get your squire to hoist you in and out like a medeival knight onto his charger in his suite of armourPerhaps the answer is to invest in one of those roof hoists you can get for some of those cars like Merc's with really heavy removable hard tops - fix it to the garage roof and using some form of strapping to sit in - simply lift and lower yourself through the convertible or T roof aperture a bit like one of those air/sea helicopter rescue operations.
That's a lot in a C3 but eased no doubt by the beautiful French scenery Stephen. 2018 I did the Nationals there and back on a blisteringly hot day in a C3 which from here is 320 round trip. Slept like the dead that night.We just completed a one day round trip of 374 miles. The car used 18.5 gallons, and the MPG came out at 20.2 mpg. I re-fuelled close to our destination (including a pot pf Millers EPS) and again on our return home at our local station. It was down to about half a tank on the gauge on both occasions. It's worth noting that the second half of the tank seems to go a lot quicker than the first!
On long trips I reckon to plan on a re-fuel at around the 250 mile mark, which gives me a nice amount of leeway. In reality, I try not to do more than 300 miles in a day, as more gets a tad tiring.
So an update:Ironically I have a shipping container, but as you say, I don't think I could get a car in & get out.
Its like looking at my C3 in the council garage I have. Oh fun days.... and how I wish the silly-icitors would hurry up with my house purchase so I can be rid of the council garage and into a lovely huge double garage.The question over fitting a shipping container I've answered.
My C6 fits snugly, BUT the only way in and out will be to add a Window Valet and even then it is quite a limbo manoeuvre.