After our children left home, my wife and I decided to treat ourselves and buy a new car for a driving holiday in Europe. We’d been driving a family estate car for years, loading it up with kids and making trips to and from universities, but we wanted something for ourselves. As a surprise, she booked a test drive for the Tesla Model S for my birthday. It was unlike any car I’d been in before. I thought “Wow, this is amazing.” It felt like the future: a computer on wheels that was constantly updating with new features. I can’t