I spent a day with Rolls-Royce's newest car and saw why it's worth every penny of its $420,000 price tag

• Want to see inside a car you'll probably never afford?
• Here's what you're missing. 
• I spent a day with the Rolls-Royce Spectre and saw what a $420,000 car interior looks and feels like. 

Whenever I mention that the electric Rolls-Royce I recently tested costs $420,000 and up, people can't help but burst out laughing in disbelief. 

And I can't blame them. It's mind-boggling that a car — with four wheels, a steering wheel, some seats — can cost about as much as the median US home. But the Rolls-Royce Spectre, the British brand's first electric vehicle, is a very special car. So it almost makes sense.