ARIZONA // In May last year, RM Auctions sold a 1957 Ferrari 250 Testarossa racer for $12.42m (Dh45.61m), a price that shattered the previous record for a car bought at auction by more than $1.5m. You might need a very similar sized pot of money to land the star attraction - a Ford GT90 - at the same auction house's next major sale in Arizona. The GT90, a one-off concept that was first shown by Ford at the 1995 Detroit motor show, will be sold as Lot 298 at the Automobiles of Arizona sale on January 22. Described by some as the ultimate supercar, the GT90 has a touch of the Bugatti about its look and is capable of a Veyron-beating theoretical top speed of 253mph (407kph). Equipped with a 6.0L V12 quad-turbocharged engine outputting 720hp, the GT90 was developed by Ford in just six months, shared underpinnings with the Jaguar XJ220 and is presented in excellent condition.