The Koenigsegg Agera One:1 made its world debut at the 2014 Geneva Motor Show.

The Swedish firm claims their new model hypercar has a top speed of more than 273mph (439kph), making it the fastest production road car in the world – faster than both the Hennessey Venom GT (270mph) and the Bugatti Veyron Super Sport (268mph).

The Koenigsegg is called the One:1 because it has a power-to-weight ratio of 1:1 – it weighs 1340kg and produces 1322 brake horsepower (1340 metric horsepower).

The price hasn't been released yet, but Koenigsegg confirm all planned units of the One:1 have already been sold.

Koenigsegg Agera One:1
Koenigsegg Agera One:1Reuters
Visitors take a closer look at the Koenigsegg Agera One:1
Visitors take a closer look at the Koenigsegg Agera One:1Reuters

Swiss firm Rinspeed is giving Geneva Motor Show visitors a glimpse of the future, with their driverless car.

The Rinspeed XchangE electric powered autonomous driving concept car has reclining seats that can swivel round so that passengers in the front can turn round, lie back and watch movies on the 32-inch wide-screen TV in the rear, perhaps while enjoying a cup of coffee from the built-in Italian espresso maker.

A model poses in the Rinspeed XchangE electric powered autonomous driving concept car
A model poses in the Rinspeed XchangE electric powered autonomous driving concept carReuters

Among the other cars creating a buzz at this year's Geneva Motor Show were a new Maserati and Lamborghini's replacement for the Gallardo. In this gallery, IBTimesUK looks at some of the most exciting cars on show.

Lamborghini Huracan
Lamborghini HuracanReuters
Maserati Alfieri
Maserati AlfieriReuters
Pagani Huayra
Pagani HuayraReuters
McLaren 650S
McLaren 650SReuters
Ferrari California T
Ferrari California TReuters
Alfa Romeo 4C Spider
Alfa Romeo 4C SpiderReuters
Alfa Romeo Disco Volante by Touring
Alfa Romeo Disco Volante by TouringReuters
Porsche 919 Hybrid and Porsche 911 RSR
Porsche 919 Hybrid and Porsche 911 RSRReuters
Morgan 3 Wheeler
Morgan 3 WheelerReuters
Chevrolet Corvette Stingray 2014
Chevrolet Corvette Stingray 2014Reuters
Bugatti Veyron Grand Sport Vitesse Rembrandt limited edition
Bugatti Veyron Grand Sport Vitesse Rembrandt limited editionReuters
Bentley Continental GTSpeed convertible
Bentley Continental GTSpeed convertibleReuters
Bentley Continental GT Speed coupe
Bentley Continental GT Speed coupeReuters