Sweden-based Koenigsegg, a luxury car manufacturer, has designed such a key for the new car, the Agera R, that you can own a 250 X iPhone or a Ferrari car.
Koenigsegg, the vehicles he designs, appeals to almost millions of people. So they compete with powerful engines that can be used in SpaceX's rockets. Koenigsegg has also developed a very expensive key for the new model Agera R vehicle.
The price of this luxury key is $ 242,000. The reason why it is so expensive is that it is special to the rich. The outer surface of the key is covered with silver, with 40 carat diamonds on its edges.
Here is Koenigsegg's Agera R vehicle! He will make a big difference to his riffs.