Almost the entire season takes place in a "driving school", which is part of why it doesn't feel as interesting, as the set doesn't change and the situations begin to feel too-familiar - however, it's really only the first six episodes that drag slightly, and later episodes change up the formula by utilising the set in interesting ways or having episodes focused around the driving school in a different location (such as the water episode).
But this doesn't mean it's not worth watching. Just like the first season, it's got excellent (and adorable!) sound design, eye-catching and fluid animation, and there are enough hilarious/heartwarming/ridiculous moments to keep your attention. (Predictably, at least one moment made me seriously teary-eyed, which is absurd for a kid's show about guinea pig cars).
If you liked the first season you'll still like this one, and since the entire season is just over thirty minutes long, there's no good reason not to binge it.
