I am teetering between 2 expensive options -- Audi A3 e-tron and BMW i3. There is much helpful information in the forum -- but one of the things I don't see much mention of though is how comfortable rear passengers find it. I have two daughters aged 16 and nearly 21. They have patiently endured the space in the back of an Audi A2 for several years as it has shrunk relative to their legs. I know I find the i3 seductive, but I wonder if anyone can offer reassurance about the comfort in the back? After all, I could buy a huge luxurious estate with the money needed for an Rex...