Big space? Or small "footprint"?
In Norway we drive a VW Caravelle, long version. Loooooads of space! We can put 4 bikes in there, upright. We can sleep in there cattycorner. We can wax skis in there. Only problem is that it's a bit of a lift to get things up to floor level. My son uses a ramp to get his scooter in. But it wasn't my choice to buy such a big car. The gas mileage isn't too bad, but still. Now that the kids are grown and out of the nest I'll vote for a smaller car next time. Something with flexible seating/hauling space but not too big, and maybe a hybrid ...?
While here in the States I drive a Hyundai Accent. Tiny car, great mileage, and believe it or not, I can get one bike in horizontally when I put the back seat down, but it does take some wriggling and tweaking to get everything turned and angled so it fits. Luckily I don't have to do it often, and have only once had to get two bikes in there. As I recall, that job did burn a few calories. Managed not to damage the bikes, tho. :)