Zero Pollution “Air-Car” – Powered by Compressed Air

My car is free for the taking with RFID. Come and get it!
(See online!)

This is very interesting. Apparently it gets hundreds of miles per tank and runs on air. Because it doesn't use combustion, the oil needs only be replaced once every 15,000 miles and the exhaust can be used for air conditioning. Most importantly,

Microcontrollers are used in every device in the car, so one tiny radio transmitter sends instructions to the lights, indicators etc There are no keys – just an access card which can be read by the car from your pocket.

Why would they ruin a revolutionary car like this with such a stupid use of wireless devices? How will they keep them from getting stolen? How will they keep people from sending them rogue signals that mess up their operation?