This logic is flawed. If you want to test something secretly you do it in plain sight and use mis-direction. Buy some Tesla vehicles and put your electronics inside -- can you tell who owns the software and hardware inside when looking at the outside? Use a Chevy volt for the really juicy stuff, nobody will even blink. If you need to test a fancy new sensor, buy a white car and slap Google on the side, everyone knows Google is testing this stuff, so meh!