Any way to keep her running without remote?

[fc_glk]

deleted, got my answer

Edited July 13, 2020 by fc_glk

[elcamino]

No, unattended running vehicles pose a hazard in many ways.  Carbon monoxide being a very dangerous one. 

[rikhek]

Put it in neutral and set the Parking Brake.  Truck will run until the tank is empty.