Using MyQ remote to unlock smart lock?

Could just get a smartthings arrival sensor and leave it in your car. I’ve not used one so I don’t know if its better than the phones, but its worth looking at. Here’s a good thread discussing it.

https://www.amazon.com/Samsung-SmartThings-F-ARR-US-2-Arrival-Sensor/dp/B00GM7V8I8/ref=sr_1_1?ie=UTF8&qid=1547229093&sr=8-1&keywords=smartthings+presence+sensor