Hot Wheels id is a unique system of play that blends Hot Wheels racing with a safe, connected platform of experimentation and competition. The more kids play with the physical car the more they level up digitally challenging them to break records they make on smart track.
Kids can measure and record speed, laps and performance on specifically designed tracks, playsets and other vehicle accessories gamifying physical experiences through digital play.
They can also track progress -- every mile driven, race won, stunts performed, and high speed reached is recorded.
The Smart Track is selling for about $180. Is it worth it? Maybe. But only if you use the app and install it on to a tablet with lots of space. It takes up a ton. 500-900Mb depending on your platform. And you are going to want the larger screen for a better interaction with the toy.
Also know that the track is more delicate than regular models so if you have a rough kid, it probably is not the right track for them. Also, make sure your kid is the type who is going to want to check their progress and learn about speed and control. If they just want to see cool racing then also it is probably not the right track.