Interestingly (perhaps?) we got a Leaf a few months ago and the biggest thing that surprised me is that it is
massive inside. I guess because the battery is stored under the floor. Although I have relatively short arms for someone my height (5' 10"), I still think it's instructive to say that when I'm sitting in the passenger seat, I can't touch the dash without leaning forward. And, again, I have slightly shorter legs, but with the seat all the way forward, I can still stretch out my legs without bending them and not touch the front. I have a long body (if it weren't for my short legs, I would be well over 6') and I can wear a straw hat in the car and still have a couple of inches of clearance. Not so sure about width... I'm probably "average sized" for a North American (fat for a Japanese person -- my wife likes to remind me...) and the width is perfectly comfortable.
My supposition is that electric vehicles are just a lot more efficient on space. The leaf isn't a huge car externally (although it's not exactly small either), but it's the biggest interior I've ridden in for a long time (probably not since my Grandfather's Buick).
As for the 2 car issue, I actually don't use a car much at all. The only reason we have one is because my wife insists that she needs it. Getting things delivered is both more convenient and cheaper from my perspective. The trade off is that I need to plan ahead a day or so, but I don't actually have to lift big heavy stuff. If I need to haul something bigger, I just rent the appropriate vehicle. I usually end up renting once or twice a year. It saves massive amounts of money. It is a lifestyle change, but it's got upsides as well as downsides.