The amount of steel around you / strength of Faraday's cage will determine your signal loss. Especially here, the homepoint and a minimum RTH height that's clear of any obstacles is importrant. Check the construction of your car of how much steel is used in windowframes and roof construction (or drive a convertible with the top down), also heat resistant window coating can be made of steel. Take care that you may not see other air traffic or obstacles the drone may fly toward.
Having said this, It is great fun, especially using the tracking mode. My car has a pretty weak roof construction and polyester (plastic) roof. I did not experience any signal loss issues, only the drone (original Mavic Pro) failing to actually follow me.
Having said this, It is great fun, especially using the tracking mode. My car has a pretty weak roof construction and polyester (plastic) roof. I did not experience any signal loss issues, only the drone (original Mavic Pro) failing to actually follow me.