You can put it in N while sitting at a stoplight that takes forever to turn green. However, cruising in neutral with an automatic transmission is a bad idea. You can coast in neutral if you have a manual transmission though.
Try this one https://www.amazon.com/Connector-Lockout-Anti-Theft-Preventing-Computer/dp/B0D7CVZF9P
But I agree with @Noval_tor, using a kill switch is much safer.