I bike to work with a dell xps 9343 and don't have any more problems with it waking from sleep unexpectedly. powercfg -lastwake and powercfg -waketimers can show what is causing the computer to wake up, and you can disable some of the modern standby settings like wake words with cortana or bluetooth. The same thing can happen with any other laptop, the default intel/microsoft settings leave a lot of possibilities and I have run into a similar issue with an X1 and a t580.