Comment by hulitu
> I am deeply interested in better understanding faraday cages that can block transmission.
You cannot shield your car (ok, you can, but then you cannot drive it). What you can do is disturb the antenna so not enough power will be available to be sent.
Quick search seems to reveal Indium Tin Oxide (ITO) coated glass is transparent enough to let through visible light, but blocks transmissions. One could theoretically build a car with that for the windows. The rest seems easier.