Modular track pieces connect via magnets on each end. There are also guides that allow you to quickly align each piece. The Starter Kit includes 10 track pieces of various shapes that will allow you to build eight different track configurations.
Once the track is created, your car will need to do a few laps to learn the track. You can also add expansion track pieces (sold separately) to expand further. Modular tracks are only compatible with the Anki OVERDRIVE app.