the reduced width. Overall length was minimized because of the Mini's two-box design, comprising only a passenger compartment and the engine compartment. There was no third box providing a separate luggage compartment (i.e. a boot) and that inevitably compromised luggage space. To offset that problem, large bins beside each of the four seats provided some useful interior storage and a centrally located instrument binnacle allowed the dashboard to be opened up for storage too. The requirement for storage bins in the front doors effectively determined that the Mini should have sliding windows rather than wind-up windows. The tiny wheels helped to reduce the intrusion of wheel arches into the interior of the vehicle and allowed a modest amount of additional luggage space in a "boot" area behind the rear seats. Overall the Mini represents some very clever packaging. Performance An Austin de luxe saloon was tested by the British magazine The Motor in 1959. It had a top speed of and could accelerate from 0– in 27.1 seconds. A fuel consumption of was recorded. The test car cost £537 including taxes of £158. Cooper and Cooper S Issigonis' friend John Cooper, owner of the Cooper Car Company and Formula One Manufacturers Champion in 1959 and 1960, saw the potential of the little car, and after some experimentation and testing, the two men collaborated to create a nimble, economical, and inexpensive car. The Austin Mini Cooper and Morris Mini Cooper debuted in September 1961. The original engine from the Morris Mini-Minor was increased to , boosting power from to . The car featured a tuned engine, twin HS2 SU carburettors, and disc brakes, a first at the time in a small car. 1,000 of this iteration were commissioned by management, intended for and designed to meet the homologation rules of Group 2 rally racing. The 997 engine was replaced by a shorter stroke unit in 1964. By the time production of the Cooper model ended in 1967, 12,274 of these popular cars had been sold to the public. A more powerful Mini Cooper, dubbed the "S", was developed in tandem and released in 1963. Featuring a engine and larger disc brakes, 4,030 Cooper S's were produced and sold until the 1071 model was deleted in August 1964. Cooper also produced two models specifically for circuit racing, rated at and a , both of which were also offered to the public. The