I use this power strip:
https://www.amazon.com/Quirky-PPVG-WH01-Pivot-Power-Genius/dp/B00GN92MC6
I'm uncertain if you can use it without a Wink or other home automation hub (you might be able to configure it with just an app) but you can set on and off timers for two of the outlets. Plug the car in when you get home, have it flip on at 9PM (or whenever) and flip back off at 8AM (or whenever) in case you don't leave that day.