Explaining Virtual Machines

So you're trying to explain VMs to someone and you pull up a picture of a van inside a truck? GENIUS. Because nothing says "virtualization" quite like Russian nesting dolls but make it vehicles. It's a computer... inside a computer... inside a computer. Inception but with more RAM allocation and less Leonardo DiCaprio. The beauty is that this visual actually works better than any technical explanation involving hypervisors and resource allocation ever could. Just point at this cursed image and watch the lightbulb moment happen. Bonus points if you mention that each VM thinks it's the only van in existence while the host truck is sweating bullets trying to manage everyone's memory demands.