Tesla's cars have changed dramatically over the last 8 years

Tesla is gearing up to roll out a big update for its cars.

The automaker announced in October that its Model S and Model X cars will now come with new hardware that will boost Autopilot's current capabilities and set the foundation for a fully driverless Tesla later on.

Tesla cars have progressed a lot in just the last year alone. Here's a look back at how far the company has come.