I use roof antennas when flying Phantoms inside the vehicle (spare RC). They still have to be aimed in the general direction of the drone. The signal will work through glass but nothing else in the vehicle. If available, using “Follow Me” will link a gps enabled device with AC. Works as long there is telemetry, even if video is blocked by trees.
Have fun, happy holidays
	
		
			
		
		
	
				
			Have fun, happy holidays