“现行SAE分级是法律和责任的划分，非技术鸿沟。L3本质上是限定ODD运行范围的L4，因此跳过在技术上是个伪命题。“在公众号“电厂”的一篇文章中，原博世车载产品线负责人易强认为，L3是“缩小范围的L4”，区别主要是在法律法规上。法律人为限定了L3的使用范围。这才是当下L3和L4最大的不同。
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Setting up your actual Sleep Routine takes a little more time and intention. A Dreamie Sleep Routine consists of multiple steps, which you can use all, some or none of for your custom routine. Those include the Bedtime Cue, which lets you know it's the time to start getting ready for bed (you designate this time); the Wind Down, or the sounds you'll fall asleep to; and the Noise Mask, the sounds that keep you asleep. If you wake up in the middle of the night, there's a Back To Sleep option too.