By Ben Marks — In the Silicon Valley, it’s not unusual to spot a young, overpaid, Internet entrepreneur tooling around the tree-lined streets of Palo Alto in, say, a McLaren 650S Spider, whose twin-turbo V8 engine can propel its grinning driver from zero to 60 in under three seconds, has a top speed of around 200 miles per hour, and retails somewhere north of a quarter-million bucks. Still, even those who are rich enough to spend as much on a car as most people will spend on a house probably wouldn’t adorn...