Koenigsegg has made world’s most expensive car key, custom made for a particular owner, which is estimated at $250,000 dollars. While the key is not currently available as a factory option if enough customers show an interest it very well could become a standard feature of the supercar.

Koenignsegg produces some of the fastest cars in the world and with the kind of prices people pay for the privilege of owning one makes it no surprise that the company has taken opulence to a new level with this custom key. It is made of platinum, onyx and is surrounded by diamonds. It is produced by Optimal Innovative Solutions – the company responsible for the diamond hood ornament for Rolls Royce.

The world’s most expensive car key has been dubbed King of Keys – a name worthy for the ornamental masterpiece which is encrusted with 40 carats worth of diamonds. It’s certainly a worthy accompaniment to a car that costs $2.8 million.